FAQs
Choose from the following
Torque available on our Dressing Spindles is a function of the RPM that the spindles are run. In general, the faster that the spindle is run, the more torque is lost. The torque curve shown is fairly typical in shape for our DC MaxTorq® Line of spindles. It will give an idea of the amount of torque lost as you increase speed. This data is for our MTC-112-7C
Motor Specifications
Continuous Torque 154 oz/in
Peak Torque 462 oz/in
RPM Range 1000-12000
79 oz/in @ 12000rpm .94hp
123 oz/in @ 8000rpm .98hp
152 oz/in @ 3600rpm .54hp
163 oz/in @ 1000rpm .16hp
HP Requirements for dressing
(per mph, June 12, 2008)
Abrasive
Type | Dress
Method | Dress
Direction | Torque
Required |
| Conventional | Cross Axis | N/A | 0.07 | hp |
| Traverse | Counter | 0.13 | hp |
| Uni | 0.34 | hp |
| Plunge | Counter | 0.17 | hp/in width |
| Uni | 0.34 | hp/in width |
| Superabrasive | Traverse | Counter | 0.20 | hp |
| Plunge | Counter | 0.26 | hp/in width |
| Uni | 0.51 | hp/in width |
Premium Warranty for Dressing System
We warrant our dresser systems under normal work conditions to be capable of meeting your product grinding specification as provided in connection with this application. This product will be free from defects in material and workmanship and warranted for a period of two (2) years from time of shipment.
Understanding that some spindle systems are not put into service immediately upon shipment, Saint-Gobain may extend warranty beyond those periods specified, at its sole discretion, provided that the Customer notify Saint-Gobain that
1) the product is not going into service immediately upon receipt, and
2) Saint-Gobain is notified when the product does go into service.
THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER WARRANTIES NOT EXPRESSLY SET FORTH HEREIN, WHETHER EXPRESS OR IMPLIED BY OPERATION OF LAW OR OTHERWISE, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS.
Dressing Diamond and CBN Wheels
- Resin and Vitrified Bond, Diamond and CBN Wheels
- Choose a dressing stick one or two grit sizes finer than the abrasive in the wheel – in a soft grade (H or I).
- Metal Bond, Diamond and CBN Wheels
- Choose a stick the same grit size or one grit size coarser than the abrasive in the wheel – in a medium grade (K–M).
- Cut-off applications – 1A1R wheels:
- Use the largest diameter flanges possible
- Use flanges of equal diameter
- Use the thickest wheel possible for increased stiffness and straightness of cut
- CBN wheels are used on hardened steels.
- Diamond wheel are used to cut or slot carbide, glass or ceramic parts.
- It is the user’s responsibility to refer to and comply with ANSI B7.1
- Cylindrical grinding applications – 1A1 wheels:
- Include all outside grinding of round parts, even though the finished product is not always a true cylinder.
- Infeed at both ends of the traverse to keep wheel face flat.
- Use work supports to prevent deflection.
- Rough grinding traverse speed should be 1/2 to 2/3 of the thickness of the wheel per work revolution.
- Finishing grinding traverse speed should be 1/2" or less per work revolution.
- CBN wheels are used on hardened steels.
- Diamond wheel are used to cut or slot carbide, glass or ceramic parts.
- It is the user’s responsibility to refer to and comply with ANSI B7.1
Diamond and CBN Product Tech Tips
- Diamond Grinds:
- Cemented carbide
- Glass
- Ceramics
- Fiberglass
- Plastics
- Stone
- Abrasives
- Electronic components and materials
- CBN Grinds:
- High speed tool steels
- Die steels
- Hardened carbon steels
- Alloy steels
- Aerospace alloys
- Hard stainless steel
- Abrasion-resistant ferrous materials
- Avoid Grinding Steel
- Avoid steel when grinding with diamond wheels. Keep the amount of steel ground to an absolute minimum.
- On brazed tools, use an aluminum oxide wheel to back off the steel shank.
- A high lubricity grinding fluid should be used.
- For some steels, an armored (AMD) diamond wheel may prove
most economical.
- Work Support – Use Rigid Work Support
- All workpieces should be supported firmly during the grinding process. Any amount of vibration will cause wheel wear and produce chatter or wave marks on the ground surface.
- On work ground between centers, centerholds should be properly prepared.
- Minimize work overhang.
- If the ground work is supported by a work finger, ensure the finger is strong enough to provide vibration-free support.
- Coolant – Grind Wet
- Diamond wheels should be used with a full flood coolant properly directed toward the grinding zone. Water with a rust inhibitor is recommended.
- Vitrified diamond wheels should be used only with a coolant.
- When a flood application can not be used, try a mist or spray application.
- Use compressed air to “atomize” water or soluble oil.
- Direct the spray at the grinding zone to help dissipate heat and prevent heat damage to the work.
- Feeds – Avoid Excessive Feeds
- Excessive feeds will result in premature wheel wear. Excessive feed rates are characterized by:
- A hard grinding sound
- Chatter
- Burn
- High wheel wear rate
- Vibration
It is the user’s responsibility to refer to and comply with ANSI B7.1
- Truing makes the wheel concentric with the spindle.
- Dressing opens the wheel’s cutting face.
- Always true and dress diamond and CBN wheels prior to use.
- Diamond and CBN wheels with grit sizes 100–180 can be trued with a Brake Controlled Truing Device.
- Refer to the “Mounting, Truing and Dressing Guide” for more information.
- It is the user’s responsibility to refer to and comply with ANSI B7.1
- Prior to truing the wheel, run a wax crayon over the wheel face. Important: do NOT use any liquid-based ink on superabrasive wheels.
- Any crayon left on the wheel face after truing will reveal untrued areas.
- Indicate the superabrasive wheel runout before starting... usually within .001" to .002", to minimize wheel loss.
- Mount the device spindle parallel to the wheel spindle to ensure proper straight face truing.
- For cup wheels, the device spindle will be mounted perpendicular to the wheel spindle.
- Always use the Brake Controlled Truing Device dry.
- Bring the diamond/CBN wheel and the truing wheel together until they almost touch.
- Start the diamond/CBN wheel to normal speed; spin the truing wheel in the same direction at point of contact.
- Bring the two wheels together until they touch.
- Make sure the truing wheel is spinning at time of contact.
- Traverse the wheel back and forth at 30 to 60 inches/minute.
- Downfeed .0005" to .001" at the end of each traverse.
- At the end of truing, the diamond/CBN wheel should be smooth and in truth.
- Apply a dressing stick to sharpen the truing wheel.
- It is the user’s responsibility to refer to and comply with ANSI B7.1
Cluster and Dia-Pak Tools – Straight face dressing of hard/ coarse wheels:
- Tool should approach the wheel at a 15° angle and be rotated periodically to keep 3 diamonds in contact with the wheel at all times.
- Tools can also be used at a 90° to the wheel face.
- Multi-Point Cluster Tools should be rotated at frequent intervals.
- Infeed per pass should not exceed .0015" (.001" with Norton Ceramic SG and Targa wheels).
- Use coolant whenever possible.
- These tools permit a faster traverse rate providing a freer cutting wheel than when dressed by a conventional single-point tool.
- It is the user’s responsibility to refer to and comply with ANSI B7.1
- Form Tools should be used in compliance with the guidelines established for the machine or dress.
- Proper centerline and light infeeds are essential to minimize side pressure. Excessive pressure will cause the diamond to fracture.
- Cone point tools should be rotated approximately 1/4 turn daily.
- Chisel Point Tools should be rotated 180° when dulling or contour problems occur.
- Norton Toolroom Dressing Tools are primarily used on surface grinders to form the grinding wheel to an exact concave or convex radius.
- We recommend dressing with coolant. However, if dressing totally dry, allow three to five seconds between passes for diamond to cool.
- Use extremely light cuts from .0002" to .001" maximum.
- Rotate tool if the application and set-up allow.
Multi-Point Tools – Straight Face Dressing and Truing
- Most multi-point tools are used for straight face dressing.
- Tool should have full face contact with the wheel.
- With new tool, 3–5 passes at .005" per pass should be taken to expose diamonds.
- Infeed per pass .001" - .002"
- Use coolant whenever possible.
- Use appropriate lead (and traverse rate).
- Contact Norton for proper tool selection for
Targa wheels. - It is the user’s responsibility to refer to and comply with ANSI B7.1
- Rigidly mount Single Point tools at a 10° - 15° angle to the wheel centerline with a line drawn through the center of the wheel, pointing in the direction of wheel travel.
- Point of contact should be slightly below centerline of wheel.
- Use coolant whenever possible.
- Normal infeed is .001" per pass.
- Lead values range from .002" - .010" per wheel revolution.
- Rotate the tool 1/4 turn periodically to maintain a sharp point.
To optimize applications using SG (ceramic) abrasives and/or tools, normal dressing parameters must change. Reduce infeed by 25%. Significant reductions in the amount of infeed and frequency of dress will result in substantially lower cost per part ground.
- To make a wheel act softer:
- Increase work speed
- Increase traverse speed
- Increase infeed
- Decrease wheel speed
- Increase dresser traverse rate
- Increase depth of dress per traverse
- Dress more often
- To make a wheel act harder:
- Decrease work speed
- Decrease traverse speed
- Decrease infeed
- Increase wheel speed (do not exceed MAX RPM marked on wheel)
- Dress at slower traverse rate
- Decrease depth of dress per traverse
- It is the user’s responsibility to refer to and comply with ANSI B7.1
- To make a wheel act softer:
- Increase work speed/regulating wheel speed
- Increase throughput speed/regulating wheel speed
- Increase infeed
- Decrease wheel speed
- Dress at a faster traverse rat
- To make a wheel act harder:
- Decrease work speed/regulating wheel speed
- Decrease throughput speed/regulating wheel speed
- Decrease infeed
- Increase wheel speed (observe safe limits)
- It is the user’s responsibility to refer to and comply with ANSI B7.1
- Use vitrified bond wheels for form holding and plunge grinding
- Use resinoid bond wheels for stock removal, long irregular parts and faster throughfeed grinding
Vitrified Centerless Wheel Speeds:
- 64A46-KVCE wheels: 6500 SFPM max operating speed
- All other vitrified centerless stock products: 8500 SFPM max operating speed
- Always check wheel speed markings on wheels before running wheels
It is the user’s responsibility to refer to and comply with ANSI B7.1
- Choose 24 and 30 grit for soft and mild steels.
- Choose 36 and 46 grit for hard steels.
- Choose as coarse a grit size as possible in order to remove stock as quickly as possible (in big chips).
- To maximize production, choose the hardest grade possible that will not overload the machine.
- It is the user’s responsibility to refer to and comply with ANSI B7.1
Single Point Diamond Tools
- Rigidly mount Single Point tools at a 10°-15° angle to the wheel centerline with a line drawn through the center of the wheel, pointing in the direction of wheel travel.
- Point of contact should be slightly below centerline of wheel.
- Use coolant whenever possible.
- Normal infeed is .001" per pass.
- Lead selections range from .002" - .010" per wheel revolution.
- Rotate the tool 1/4 turn periodically to maintain a sharp point.
Multi-Point Diamond Tools
- Most multi-point tools are used for straight face dressing.
- Tool should have full face contact with the wheel.
- With new tool, 3–5 passes at .005" per pass should be taken to expose diamonds.
- Infeed per pass .001" - .002"
- Use coolant whenever possible.
- Use appropriate lead (and traverse rate).
- Contact Norton for proper tool selection for Targa wheels.
Dressing SG Ceramic Wheels
- Use our specially designed Norton SG diamond tools when dressing Norton SG ceramic wheels.
- When first using a Norton SG tool, make 3 to 5 passes at .005" infeed to ensure full face contact between the dressing tool and
wheel face. - Reduce normal dressing infeed by half. Do not exceed infeed of .002" per pass.
- The lead selection should be between .006"-.030" per wheel revolution. Faster traverse with Norton SG tools generally provides an open wheel face that can maximize productivity of the Norton ceramic abrasive.
- To optimize applications using SG cermic abrasives and/or tools, normal dressing parameters must change. Reduce infeed by 25%. Significant reductions in the amount of infeed and frequency of dress will result in substantially lower cost per part ground.
- Use VBE/V/VS/VK bonds for general purpose applications or medium contact areas.
- Use VBEP/VS, VCP, VP2 bonds on wide contact areas where heat is an issue.
- Use light machine oil with cloth rolls as a lubricant for finer finishes and quicker cut.
- It is the user’s responsibility to refer to and comply with ANSI B7.7
- Use light machine oil with cloth sheets as a lubricant for finer finishes and quicker cut.
- Remember to always wear the appropriate PPE (personal protection equipment) when working
- It is the user’s responsibility to refer to and comply with ANSI B7.7
- A light bodied grease applied to the belt surface will reduce loading and greatly enhance the belt life and performance when grinding soft, malleable nonferrous materials such as aluminum, brass, bronze and copper.
- Use a rubber belt cleaning stick to remove wood and other non-metallic materials that build up on sanding belts during use. Carefully apply it to the face of the belt while running to remove unwanted materials and increase cut rate and overall belt life.
- Norlok and Plyweld joints can be used in either direction.
- 36" wide belts can be used on machines that normally use 37" wide belts.
- Closed coat belts are used on harder materials where loading is not a problem.
- Wear proper PPE (personal protection equipment) when sanding.
- It is the user’s responsibility to refer to and comply with ANSI B7.7
- For best mounted point performance, always run the mounted point at the maximum allowable speed according to ANSI B7.1. Refer to the speed chart included in each shipment for proper operating speeds.
- Use “A” shapes for medium- to heavy-duty blending
- Use “W” shapes for offhand and precision grinding of medium to heavy stock
- Dress the center lap mounted points frequently to ensure accurate and smooth center holes.
- Use 36 grit for rough grinding.
- Use 60 grit for imparting fine finishes or when grinding on narrow surfaces.
It is the user’s responsibility to refer to and comply with ANSI B7.1
- Always ensure proper mounting of floorstand and swingframe wheels by mounting with arrow down as marked on wheel.
- Always use safety guard.
- Always run wheel for 1 minute before grinding.
- For optimum performance, ensure adequate air pressure and air volume when using pneumatic machines.
- Use constant surface foot per minute machines for highest efficiency.
- Do not overdress the wheel face.
- Avoid loading or glazing by changing the contact angle.
- Use pressure assist whenever possible to obtain maximum cut rate.
- It is the user’s responsibility to refer to and comply with ANSI B7.1
- Maintain recommended air supply (pressure and volume) for highest efficiency.
- Wear proper PPE (personal protection equipment).
- It is the user’s responsibility to refer to and comply with ANSI B7.1
- Non-Reinforced cut-off wheels are designed for use on “fixed base” types of machines where the work is securely clamped, guarded, and where the wheel operates on a controlled cutting plane.
- Wheels with a “W” reinforcement (reinforcement around the hole) are not considered to be truly reinforced.
- Clamp or fixture the workpiece for straightest cuts
- Run wheels at the highest possible speed marked on the wheel and make cuts as quickly as possible.
- It is recommended that a cut-off machine should have 1 horsepower for every inch of wheel diameter. For less than this, we recommend using a softer specification.
- Using a harder grade wheel increases wheel life, but it also increases burn, power required and decreases cut rate.
- Using a coarser grit wheel increases wheel life and cut rate, but it also increases burr and power required.
Reinforced cut-off wheels are designed to resist breakage caused by severe cross-bending and are required on any operation where the work is not securely clamped.
- Non-Reinforced cut-off wheels are designed for use on “fixed base” types of machines where the work is securely clamped, guarded, and where the wheel operates on a controlled cutting plane.
- Wheels with a “W” reinforcement (reinforcement around the hole) are not considered to be truly reinforced.
- Use Long Life chop saw wheels on small cross section workpieces.
- Use Free Cut chop saw wheels on larger cross-sections and/or hard-to-cut materials.
- Run the cut-off machine at the highest possible speed marked on the wheel.
- Long Life wheels should be used on a cut-off machine with 1 horsepower for every inch of wheel diameter.
- With a less powerful machine, we recommend starting with a Free Cut specification.
Use Ductile high speed reinforced cut-off wheels on a high speed gas or electric saw for ultra-hard metals, hydraulic hose and PVC pipe.
For maximum performance, run the grinder at the highest possible speed marked on the wheel and hold your right angle grinder at the correct angle.
- 15° angle with Type 28 saucers and Type 29 wheels
- 30° angle with most 1/8" and all 1/4" thick Type 27 Wheels
- 90° angle with .045", 1/16", 3/32", .125" and 1/8" thick Type 27 Wheels
- Convolute wheels must always run in the direction indicated by the arrow printed on the side of each wheel.
- Light to medium pressure is recommended. Excessive pressure may result in part damage.
- Lubricants such as water-soluble oil and straight oil will decrease the heat and improve the surface finish and lustre.
- Interleaf flap wheels must always be run in the direction indicated by the arrow printed on the product, to take advantage of the coated abrasive cloth flaps
- Convolute wheels must always run in the direction indicated by the arrow printed on the side of each wheel.
- Unified wheels can be run in either direction.
- For removing 60 to 120 grit grindlines – use coarse grit (brown)
- For removing 120 to 180 grit grindlines – use medium grit (maroon)
- For removing 180 to 320 grit grindlines – use very fine grit (blue)
Use 2" back-up pad with 3" Speed-Lok TR High Strength discs to work on edge for added flexibility.
Norton Bear-Tex products are non-metallic so they won’t rust or contaminate workpieces, and are an ideal replacement for steel wool.
- Unsecured machines can move, causing grinding breakage and injury. Fixed-Base bench and pedestal grinders MUST be secured.
- Wear appropriate PPE (personal protection equipment) when using bench and pedestal grinders.
- Do not grind wood, plastic or any other non-metallic material using a bench and pedestal wheel on a bench or pedestal grinder.
- All bench and pedestal wheels must be dressed to prevent loading.
- Loading can cause excessive heat, damage to the workpiece and wheel breakage.
- Dressing exposes new cutting edges and provides chip clearance.
- Do not grind wood, plastic or any other non-metallic material using a bench and pedestal grinding wheel on a bench or pedestal grinder.
Use flap discs one grit size coarser than fiber discs, except in 36 grit.
- Operate Type 29 and Type 27C flap discs at a 15° to 25° angle.
- Operate Type 27 (regular, jumbo and high density) at an angle less than 15° to avoid weakening flap edges.