Portable grinders. Purpose and types.
The portable grinder is a lightweight, hand-operated machine tool. It can be powered electrically or pneumatically, depending on the model selected. The portable grinder is used in the field or maintenance shop to grind excess metal from welds, remove rust, and for special finishing operations around the work area. Since this tool is hand operated, the quality of the work depends upon the ability and experience of the operator.
A small portable chuck type grinder may be known as a die grinder and is available with a number of accessories. These accessories include rotary files, small circular saws, wire brushes, assorted grinding wheels, and small sanding and polishing disks. These accessories are mounted to straight shank arbors which fit into the collect chuck of the grinder.
Special reduction collets are provided so that smaller diameter arbors or shanks can be mounted in the chuck. Operations performed with this portable grinder include shaping and smoothing intricate dies and castings, removing burrs from edges and surfaces, cleaning and repairing threaded parts, repairing keyways and splines, grinding bevels, countersinking holes and repairing scored and mutilated surfaces.
The portable grinder (wheel type) (Figure 2) can be electric or pneumatic and is designed for heavy-duty portable grinding operations. It is capable of mounting and rotating 6- inch-diameter grinding abrasive wheels and 6-inch-diameter wire brushes and polishing wheels. This grinder is used as a hand grinder for removing rust, corrosion, and sharp burrs from large workpieces (Figure 3).
Most portable grinders come with a grinder stand (Figure 4). Mounted on this stand, the grinder can be used to sharpen twist drills and cutter bits in the machine shop. Most grinders also come equipped with a wheel guard that should remain in place at all times to protect the operator from flying sparks and waste material. The portable grinder is designed so that the face of the grinding wheel is used; never use the side of the wheel or serious injury or damage could occur (Figure 5).
The angle grinder (disk type) (Figure 6) can be electric or pneumatic, and is designed for heavy duty grinding operations. The angle grinder consists of a depressed center abrasive grinding disk with wheel guard attached to the basic portable motor assembly (Figure 7). Care must be taken to check the wheel for cracks and to ensure that the wheel guard stays in place while operating.
Fig. 1- Portable electric grinder ( chuck type ) - Amoladora eléctrica portátil ( tipo mandril )
Fig. 2 - Portable grinders ( wheel type ) - Amoladoras portátiles ( tipo disco )
Fig. 3- Operation of portable pneumatic grinder - Operación de una amoladora neumática portátil
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Amoladoras portátiles. Propósitos y tipos .
La amoladora portátil es una máquina herramienta ligera y manual. Puede ser accionada eléctricamente o neumáticamente, dependiendo del modelo seleccionado. La amoladora portátil se utiliza en campo o en el taller de mantenimiento para amolar exceso de metal de soldaduras, quitar óxido, y para las operaciones de acabado especiales alrededor del área de trabajo. Puesto que esta herramienta es manual, la calidad del trabajo depende de la capacidad y de la experiencia del operador.
Un tipo portátil de amoladora pequeña de mandril puede ser conocida como rectificadora de matrices (también amoladora recta, amoladora de troqueles, amoladora de dados, etc ). y está disponible con un número de accesorios. Estos accesorios incluyen limas rotativas, pequeñas sierras circulares, cepillos de alambre, muelas abrasivas variadas, y pequeños discos de lijar y de pulir. Estos accesorios se montan en ejes de espigas rectas que caben en el mandril de la amoladora.
Se proporcionan pinzas portapiezas de reducción especiales para poder insertar ejes de espigas o vástagos de un diámetro más pequeños en el mandril. Las operaciones realizadas con esta amoladora portátil incluyen formar y alisar moldes y bastidores intrincados, remoción de rebabas de bordes y de superficies, la limpieza y reparación de piezas roscadas, reparación de chaveteras y acanaladuras, biseles amolados, avellanando de agujeros y reparación de superficies marcadas y mutiladas.
La amoladora portátil (tipo disco) (figura 2) puede ser eléctrica o neumática y se diseña para operaciones de pulido portátiles de gran potencia. Es capaz de insertar y de rotar discos abrasivos de 6 pulgadas de diámetro y discos de cepillado de alambre y discos de pulido de 6 pulgadas. Esta amoladora se utiliza en forma manual para quitar óxido, corrosión, y rebabas agudas de piezas de trabajo (figura 3).
La mayoría de las amoladoras portátiles vienen con un soporte de amoladora (figura 4). Montada en este soporte, la amoladora se puede utilizar para afilar brocas helicoidales y sacabocados en el taller de máquinas. La mayoría de las amoladoras también vienen equipadas con un protector de disco que debe permanecer en el lugar siempre para proteger al operador contra chispas voladoras y material de desecho. La amoladora portátil se diseña de manera de utilizar la cara del disco abrasivo; nunca utilice el filo del disco o podrían ocurrir serias lesiones o daños (cuadro 5).
La amoladora de ángulo (tipo disco) (figura 6 ) puede ser eléctrica o neumática, y se diseña para operaciones de pulido de gran potencia. La amoladora de ángulo consiste en un disco de pulido abrasivo de centro deprimido con el protector de disco fijado al montaje de motor portátil básico (figura 7). Se debe tener cuidado de comprobar el estado del disco para saber si hay grietas y para asegurarse de que el protector de disco permanece en el lugar mientras funciona.
Fig. 4 - Portable electric grinder ( wheel type ) with grinder stand - Amoladora eléctrica portátil ( tipo disco ) con soporte de amoladora.
Fig. 5- Correct and incorrect methods of using the portable grinder ( wheel type ) - Métodos correcto e incorrecto de uso de una amoladora portátil ( tipo disco )
Fig. 6- Angle grinders (disk type ) - Amoladoras angulares ( tipo disco ) |
Fig. 7- Configuration of an angle grinder (disk type ) - Configuración de una amoladora angular ( tipo disco )
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Northern Industrial Type 27 Depressed Center Angle Grinder Wheel - 4 1/2in. dia.
$1.99
For use with right angle grinders in metal-grinding applications. 4 1/2in. x 1/4in. x 7/8in. Wheel Diameter (in.): 4 1/2, Wheel Thickness (in.): 1/4, Arbor Size (in.): 7/8, Wheel Type: Type 27 [Read more]
Store: Northern Tool and Equipment
Brand: Northern Industrial Tools
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Northern Industrial Type 27 Depressed Center Angle Grinder Wheel - 4in. dia.
$1.99
For use with right angle grinders in grinding all types of metal. 4in. x 1/4in. x 5/8in. Wheel Diameter (in.): 4, Wheel Thickness (in.): 1/4, Arbor Size (in.): 5/8, Wheel Type: Type 27 [Read more]
Store: Northern Tool and Equipment
Brand: Northern Industrial Tools
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Northern Industrial Type 27 Premium Depressed Center Angle Grinder Wheel - 4 1/2in. dia.
$1.99
For use with right angle grinders in grinding all types of metal. Premium quality outlasts other wheels and removes stock faster. 4 1/2in. x 1/4in. x 7/8in. Wheel Diameter (in.): 4 1/2, Wheel Thickness (in.): 1/4, Arbor Size (in.): 7/8, Wheel Type: Type 27 [Read more]
Store: Northern Tool and Equipment
Brand: Northern Industrial Tools
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Northern Industrial Type 27 Premium Depressed Center Angle Grinder Wheel - 7in. dia.
$4.99
Premium performance for metal applications. 7in. x 1/4in. x 5/8in.-11 Wheels (qty.): 1, Wheel Diameter (in.): 7, Wheel Thickness (in.): 1/4, Arbor Size (in.): 5/8, Thread Size: 11, Wheel Type: Type 27, Recommended Use: Metal [Read more]
Store: Northern Tool and Equipment
Brand: Northern Industrial Tools
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Oregon Blade Grinder with Light, Model# 88-019
$329.99
Blade grinder features a 1/2 HP standard-duty motor with reversing switch for grinding in both directions with an 8in. hardened red stone. 1/2 HP standard duty motor provides ample power in a compact, affordable unit Reversing switch allows grinding of left- and right-hand cut blades 8in. hardened grinding wheel Rubber feet reduces vibration for smooth operation Adjustable light included Easy to adjust blade table - table adjusts, not the motor On/Off safety switch Grit collector #161503 available (sold separately) Not designed for commercial or industrial use [Read more]
Store: Northern Tool and Equipment
Brand: Oregon
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Oregon Bench Grinder for 3/4in.-Pitch Chain, Model# 511A-BC
$449.99
Built for frequent, high-volume chain sharpening. Powerful motor, easy-to-use controls and safety features. Application: For frequent high-volume chain sharpening, Mount Type: Bench mount, Motor: Single phase, 115V AC, 60 Hz, Rated RPM: 3, 400, Volts: 115, Watts: 285, Chain Pitch (in.): 3/4, Arbor Size (in.): 7/8, Includes: 3/4in.-pitch vise and 5/16in. grinding wheel, Wheel Included: Yes, Includes (qty.): 1 Bench chainsaw grinder, 1 grinding wheel, and 1 pitch vise [Read more]
Store: Northern Tool and Equipment
Brand: Oregon
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- Northern Industrial 4 1/2in. Angle Grinder Kit - Model# RP1702FK8
$49.99
Cut and grind metal, sharpen tools and blades, mill, debur and clean-up welds. Wire cup brush quickly removes rust and paint. Wheel Diameter (in.): 4 1/2, Amps: 6.8, Speed (RPM): 11, 000, Switch Type: Paddle switch, Spindle Lock: Yes, Side Handle: Yes, reversible, Wheel Included: Yes, (1) metal grinding wheel, (1) metal cutting wheel, (1) 60-grit flap disc, and (1) 3in. wire cup, Wrench Included: Yes, Case Included: Yes Die-cast aluminum gear housing Metal grinding wheel Metal cutting wheel 60-grit flap disc 3 wire cup brush Safety goggles Combination wrench Heavy-duty storage case with handle [Read more]
Store: Northern Tool and Equipment
Brand: Northern Industrial Tools
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Mini-Me Blade Roller for Makita Angle Grinders, Model# BR45001
$49.99
Removable rolling carriage for your angle grinder to cut concrete, marble, tile and many other types of material. Can be used for scoring decorative lines, tuck pointing, crack chasing and stone/masonry work. U.S.A. Blade Roller Type: Angle Grinder, Carriage Type: Rolling, Removable Carriage: Yes, Dimensions L x W x H (in.): 7 x 2 x 1 1/2 Adjustable clearance angle and depth of cut Fits Makita 4in. and 4 1/2in. grinders U.S.A. Model BR45001 [Read more]
Store: Northern Tool and Equipment
Brand: Northern Tool and Equipment
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- Work Sharp Precision Benchtop Tool Grinder/Sharpener - Model WS2000
$99.99
The Work Sharp WS2000 is a precision grinder and sharpener designed to restore tools you already own, such as gasket scrapers, wood chisels, cold chisels, putty knives, mower blades, axes and much more. Air-cooled dry sharpening system uses slotted wheels for adhering PSA abrasives. Precise and repeatable 25 sharpening port for blades up to 1 5/8in.W. Slotted wheel allows user to see through as edge is sharpened. Forced air cooling and sharpening port heat sink enable higher material removal rates without affecting steel temper. Offers coarse grinding to micro-fine honing. Includes 8-pc. abrasive kit. U.S.A. Air-cooled dry sharpening system Fast and precise sharpening of carving and lathe tools No jigs needed; just select angle and sharpen Lapping abrasive in sharpening port increases burr removal and speeds sharpening Rigid bevel angle settings and skew cam provide precise positioning of sharpening port Bevel and skew angles are not affected by wheel diameter, chisel size or user setup Offers quick reshaping of a new or damaged chisel and fast honing No recalibration required for changing wheel diameter or tool size [Read more]
Store: Northern Tool and Equipment
Brand: WorkSharp
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- Makita Angle Grinder - 4 1/2in., 9.5 Amp, Super Joint System, Model# 9564CV
$164.99
9.5 Amp motor design for high output power in a more compact tool. 5-stage variable speed control dial for matching the RPM to the work. Super Joint System (SJS) helps prevent gear damage. All-metal gear housing for added protection and larger, improved carbon brush material for longer tool life. Wheel Diameter (in.): 4 1/2, Amps: 9.5, Speed (RPM): 10, 500, Switch Type: Paddle switch, Spindle Thread Size: 5/8in. x 11, Side Handle: Yes, Variable Speed: No, Wheel Included: Yes, Wrench Included: Yes, Case Included: No Overall length: 11 3/4in. 5-stage variable speed control Tool-less wheel guard adjustment for easy clamping Labyrinth construction seals and protects the motor and bearings from dust and debris by creating a complex set of channels [Read more]
Store: Northern Tool and Equipment
Brand: Makita
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- Makita Angle Grinder - 7in., 15 Amp, Model# GA7011C
$199.99
7in. electronic angle grinder is ideal for welders, fabricators, masons, maintenance/repair and more. 15 AMP motor design for high output power in a more compact tool (only 7.5 lbs.) Wheel Diameter (in.): 7, Amps: 15, Switch Type: Trigger with lock-on switch, Spindle Thread Size: 5/8in. x 11, Side Handle: Yes, Wheel Included: Yes, Wrench Included: Yes, Case Included: No Soft-start feature for smooth start-ups Externally accessible brushes for greater serviceability and longer motor life Rotatable gear housing rotates 90 for cutting applications Electronic speed control maintains constant speed under load Tool-less wheel guard adjustment for easy clamping Model GA7011C [Read more]
Store: Northern Tool and Equipment
Brand: Makita
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- Milwaukee Die Grinder - 4.5 Amp, 21, 000 RPM, Model# 5192
$239.99
Grinding in tight places around irregular surfaces is the specialty of this Milwaukee Die Grinder. This Die Grinder comes with 1/4in. collet but will accept 1/8in. collet as well. A full array of mounted points allows you to grind many shapes and diameters. Wheel Diameter (in.): 2, Amps: 4.5, Speed (RPM): 21, 000, Switch Type: On/off toggle switch, Spindle Thread Size: 1/4in. collet, Side Handle: No, Wheel Included: No, Wrench Included: Yes, Case Included: No For mounted wheels and points up to 1 5/8in.; reinforced wheels up to 2in. All ball and roller bearings [Read more]
Store: Northern Tool and Equipment
Brand: Milwaukee
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- Milwaukee Die Grinder - 4.5 Amp, 21, 000 RPM, Paddle Switch, Model# 5194
$239.99
Grinding in tight places around irregular surfaces is the specialty of this Milwaukee Die Grinder. This Die Grinder comes with 1/4in. collet but will accept 1/8in. collet as well. A full array of mounted points allows you to grind many shapes and diameters. Wheel Diameter (in.): 2, Amps: 4.5, Speed (RPM): 21, 000, Switch Type: Paddle switch, Spindle Thread Size: 1/4in. collet, Side Handle: No, Wheel Included: No, Wrench Included: Yes, Case Included: No For mounted wheels and points up to 1 5/8in.; reinforced wheels up to 2in. Easy one-handed operation All ball and roller bearings [Read more]
Store: Northern Tool and Equipment
Brand: Milwaukee
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- Milwaukee Die Grinder - 11 Amp, Model# 5196
$269.99
This Milwaukee Die Grinder offers more power for heavy duty jobs. The 5196 comes with a 1/4in. collet but will accept 1/8in. collet as well. A full array of mounted points allows you to grind many shapes and diameters. A maximum 2in. reinforced or non-reinforced wheel can be attached to this versatile grinder for deburring and shaping larger work pieces. Wheel Diameter (in.): 2, Amps: 11, Speed (RPM): 14, 500, Switch Type: Trigger with lock-on switch, Spindle Thread Size: 1/4in. collet, Side Handle: No, Wheel Included: No, Wrench Included: Yes, Case Included: No Ideal when grinding in tight places around irregular surfaces For mounted wheels and points up to 2in. Ball bearing mounted armature All ball and roller bearings Operated by a trigger switch on the back handle [Read more]
Store: Northern Tool and Equipment
Brand: Milwaukee
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- Milwaukee Straight Grinder - 11 Amp, 3in., 14, 500 RPM, Model# 5211
$309.99
A coated spindle housing make this heavy-duty Milwaukee Straight Grinder comfortable to hold while working. Equipped with a hinged face plate with wing nut fasteners for easy wheel changes, this tool can accept up to 3in. resinoid bond wheels. Wire brushes can also be attached for cleaning rust from work surfaces. Item is currently on backorder with the manufacturer. Wheel Diameter (in.): 3, Amps: 11, Speed (RPM): 14, 500, Switch Type: Trigger with lock-on switch, Spindle Thread Size: 3/8in.-24, Side Handle: No, Cord Length (ft.): 9, Wheel Included: Yes, Wrench Included: Yes, Case Included: No Impact-absorbing tool rest [Read more]
Store: Northern Tool and Equipment
Brand: Milwaukee
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- Milwaukee Straight Grinder - 12 Amp, 5in., 7000 RPM, Model# 5223
$359.99
A coated spindle housing make this heavy-duty Milwaukee Straight Grinder comfortable to hold while working. This tool can accept up to 5in. resinoid bond wheels. Wire brushes can also be attached for cleaning rust from work surfaces as well as buffing wheels for polishing surfaces. Wheel Diameter (in.): 5, Amps: 12, Speed (RPM): 7, 000, Switch Type: Trigger with lock-on switch, Spindle Thread Size: 5/8in.-11, Side Handle: No, Cord Length (ft.): 9, Wheel Included: Yes, Wrench Included: Yes, Case Included: No Impact-absorbing tool rest [Read more]
Store: Northern Tool and Equipment
Brand: Milwaukee
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- Milwaukee Straight Grinder - 15 Amp, 6in., 5500 RPM, Model# 5243
$369.99
A coated spindle housing make this heavy-duty Milwaukee Straight Grinder comfortable to hold working. Equipped with a hinged face plate with wing nut fasteners for easy wheel changes, this tool can accept up to 6in. resinoid bond wheels. Wire brushes can also be attached for cleaning rust from work surfaces, as well as buffing wheels for polishing. Wheel Diameter (in.): 6, Amps: 15, Speed (RPM): 5, 500, Switch Type: Trigger with lock-on switch, Spindle Thread Size: 5/8in.-11, Side Handle: No, Variable Speed: No, Wheel Included: Yes, Wrench Included: Yes, Case Included: No Impact-absorbing tool rest Can be converted to a Tuck Point Grinder optional kit (sold separately) [Read more]
Store: Northern Tool and Equipment
Brand: Milwaukee
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Chicago Pneumatic Mini Angle Die Grinder Kit, Model# CP875K
$99.99
This Chicago Pneumatic mini angle die grinder kit features a compact, lightweight design and 90 head for working in tight spaces. Kit includes surface prep pads and sanding discs in case. CFM at Load: 22, Speed (RPM): 22, 500, Collet Size (in.): 1/4, 6mm 22, 500 RPM free speed Compact, lightweight design 90 head for flexibility in tight spaces For high-speed blending, smoothing, porting and deburring 1/4in. and 6mm collets 22 CFM @ load Includes grinder, 2in. backing pad, 2 coarse, 2 medium and 2 fine surface prep pads, two 50-grit, two 36-grit and two 24-grit sanding discs [Read more]
Store: Northern Tool and Equipment
Brand: Chicago Pneumatic
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- Northern Industrial Cordless Angle Grinder - 18 Volt, 4 1/2in. Wheel
$139.99
The Northern Industrial 18V cordless 4 1/2in. angle grinder lets you grind in any location without having to plug in a power cord. Wheel Diameter (in.): 4 1/2, Speed (RPM): 6, 500, Spindle Lock: Yes, Side Handle: Yes, Wheel Included: Yes, Case Included: Yes Adjustable guard 2-position left/right auxiliary handle for control Rubber-coated handle for a secure grip Spindle lock Includes two 18V Ni-MH batteries, 1.5-hour fast charger. [Read more]
Store: Northern Tool and Equipment
Brand: Northern Industrial Tools
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- Northern Industrial Magnesium Angle Grinder - 7in., 15 Amp
$54.99
This Northern Industrial 7in. 15 Amp angle grinder features a die-cast magnesium gear housing that delivers the ideal combination of light weight and durability. Provides ample power for high-torque cutting and grinding. Wheel Diameter (in.): 7, Amps: 15, Speed (RPM): 8, 000, Spindle Thread Size: 5/8in., Spindle Lock: Yes, Side Handle: No, Wheel Included: Yes Extended rear handle for balance and comfort Rubberized grips on front and rear handles for comfort and control Magnesium gear housing for lightweight durability Tool-free wheel guard adjustment Swivel ball-joint power cord for fewer tangles Externally accessible carbon brushes Includes 3-position auxiliary handle and 7 grinding wheel [Read more]
Store: Northern Tool and Equipment
Brand: Northern Industrial Tools
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AirCat Pneumatic Inside Corner Die Grinder, Model# 6275
$249.99
The superior mechanics and internal mechanisms of the AirCat Die Grinder includes high-quality bearing surfaces, air chambers and turbines. The patented exhaust muffler/filter technology reduces the level of noise while retaining more power and torque. The Aircat pneumatic corner die grinder is designed to cut bolts, trim welds, cut exhaust pipes and more. Compact for use in restricted spaces. Disc Diameter (in.): 4, Air Consumption (CFM): 7.8, Speed (RPM): 15, 000, Air Inlet Size (in. NPT): 1/4 90 PSI 82dB sound level Through-the-handle exhaust [Read more]
Store: Northern Tool and Equipment
Brand: AirCat
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- Ingersoll Rand IQv Series Cordless Straight Die Grinder - 14.4 Volt, Model# GS25
$134.99
Ingersoll Rands IQv Series cordless straight die grinder offers performance and portability that are ideal for light-duty grinding applications. Speed (RPM): 27, 500, HP: .35 .35 HP motor delivers power that exceeds most air die grinders Advanced gearing with same head and collet as Ingersoll Rand air die grinders Variable-speed motor control with safety lock 27, 500 RPM free speed Compatible with all 14.4V IQv batteries, including Ni-Cd and Lithium Ion Battery sold separately Model GS25 [Read more]
Store: Northern Tool and Equipment
Brand: Ingersoll Rand
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- Ingersoll Rand IQv Series Cordless Right Angle Die Grinder - 14.4 Volt, Model# GR25
$139.99
Ingersoll Rands IQv Series cordless right angle die grinder offers performance and portability that make it ideal for light-duty grinding applications Speed (RPM): 25, 000, HP: .35 .35 HP motor delivers power that exceeds most air die grinders Advanced gearing with same angle head and collet as Ingersoll Rand air die grinders Variable-speed motor control with safety lock 20, 000 RPM free speed Compatible with all 14.4V IQv batteries, including Ni-Cd and Lithium Ion Battery sold separately [Read more]
Store: Northern Tool and Equipment
Brand: Ingersoll Rand
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Astro Pneumatic Pencil-Style Die Grinder - 1/8In., Model# 218
$49.99
The Astro Pneumatic pencil-style die grinder is designed for high speed porting and finishing of small parts. Air Consumption (CFM): 4, Speed (RPM): 56, 000, Air Inlet Size (in. NPT): 1/4, Min. Hose Size (in.): 3/8, Collet Size (in.): 1/8, Tool Weight (lbs.): 1 56, 000 RPM free speed; 90-120 PSI 1/8in. collet 1/4in. inlet; 3/8in. hose size dia. 4 CFM @ load Ideal for tight spots and for high-speed porting and finishing of small parts [Read more]
Store: Northern Tool and Equipment
Brand: Astro Pneumatic Tool
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Chicago Pneumatic Mini 90- Angle Grinder - Model# CP7562
$99.99
The Chicago Pneumatic mini 90 angle grinder gives you needed flexibility in confined areas. Excellent for blending, smoothing, porting and deburring. Air Consumption (CFM): 6, CFM at Load: 21, Speed (RPM): 23000, Air Inlet Size (in. NPT): 1/4, Min. Hose Size (in.): 3/8, Collet Size (in.): 1/4, Variable Speed: Yes .25 HP high-performance motor 1/4in. collet 6 CFM average consumption; 21 CFM actual Easy-access speed regulator for precise power and control 90 angle head allows flexibility in confined areas Insulated handle grip for added comfort [Read more]
Store: Northern Tool and Equipment
Brand: Chicago Pneumatic
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- Northern Industrial Angle Grinder - 4 1/2in. Wheel, 8 Amp, 11, 000 RPM, Model# CT-3049
$29.99
The Northern Industrial 4 1/2in. angle grinder has the power to perform many grinding tasks with its 8 Amp motor. Wheel Diameter (in.): 4 1/2, Amps: 8, Speed (RPM): 11, 000, Spindle Lock: Yes, Side Handle: Yes Powerful 1010 Watt motor Long 3-position handle for better control Handle can be mounted on top, left or right side Spindle lock for quick wheel changes Includes side handle, spanner, wheel guard and grinding wheel [Read more]
Store: Northern Tool and Equipment
Brand: Northern Industrial Tools
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Operations with portable grinders.
Before operating any portable grinder, check the grinding wheel for cracks and check that the arbor hole is the proper size for the grinder to be used. When operating these grinders, keep a light pressure on the work to avoid damaging the wheel or overheating the workpiece.
Both the small and the larger portable grinders operate at a high speed, so avoid letting the wheel rest on one spot for too long. This could cause the work to burn or the wheel to crack and explode. Always check the manufacturer’s instruction manual before operation to ensure the grinding wheel’s maximum rated speed is rated higher than the maximum speed of the grinder.
When grinding, buffing, or polishing with any portable grinder, always keep a firm grip on the tool to avoid injury or damage to equipment.
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Operaciones con amoladoras portátiles.
Antes de hacer funcionar cualquier amoladora portátil, compruebe el estado del disco abrasivo para saber si hay grietas y compruebe que el agujero de las pinzas portapiezas o agujero del eje es del tamaño apropiado para que la amoladora sea utilizada. Al hacer funcionar estas amoladoras, mantenga una presión ligera sobre el objeto de trabajo para evitar dañar el disco o recalentar dicho objeto.
Tanto las amoladoras portátiles pequeñas y como las más grandes funcionan a alta velocidad, así que evite dejar la rueda apoyarse sobre un punto durante demasiado tiempo. Esto podría hacer que el objeto de trabajo se queme o que el disco se agriete y estalle. Compruebe siempre el manual de instrucciones del fabricante antes de que la operación, para asegurarse que la velocidad máxima permitida del disco abrasivo se encuentre por encima que la velocidad máxima de la amoladora.
Cuando realice el amolado, lustre, o pulido con cualquier amoladora portátil, mantenga siempre una presión firme en la herramienta para evitar cualquier lesión o daño al equipo. |
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