About Shaft Couplings
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About Drill Bits
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About Masonry Drill Bits
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Drill Bit Decimal Size Equivalents
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Drill Bit Shank Adapters for Rotary Hammers
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Drill Bit and Spline-Drive
Rotary Hammer
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Adapt your rotary hammer to fit a variety of masonry drill bit shank types.
Splined-to-Keyed Flexible Shaft Couplings
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Connect splined shafts to keyed shafts. These couplings are commonly used to connect hydraulic pumps, compressors, and other heavy duty equipment, which often have splined shafts, to electric motors and other components that often have keyed shafts. They have a splined hub on one side and a keyed hub on the other. A spider cushion in the middle damps vibration, absorbs shock loads, and adjusts for misalignment. Because the hubs interlock with the spider, these couplings will continue to work even if the spider breaks or wears away. This fail-safe design gives you time to shut down your power source before damage occurs to other components. Lubrication is not required.
A complete coupling consists of two hubs and one spider. All components are sold separately.
Buna-N spiders are best for high-speed systems and jobs with frequent starting, stopping, and reversing. The most commonly used spider material, Buna-N absorbs vibration better than other materials but cannot handle as much torque. It won't break down when exposed to oil and chemicals.
Use polyurethane spiders for high-torque, continuous-motion applications where vibration is a concern. They absorb vibration better than Hytrel spiders but are not as resistant to oil and chemicals. They're not for use in applications with frequent starting, stopping, and reversing.
Hytrel spiders handle the highest torque of any of our spiders and have the best resistance to oil and chemicals. However, they don't compensate for as much misalignment and are not recommended for applications with frequent starting, stopping, and reversing.
Dia. | ||
---|---|---|
SAE Spline Size | (X) | (Y) |
A | 5/8" | 0.509" |
B | 7/8" | 0.754" |
B-B | 1" | 0.877" |
C | 1 1/4" | 1.087" |
D | 1 3/4" | 1.506" |
E | 1 3/4" | 1.506" |
Buna-N Rubber Spiders | ||||||||||||||||
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Splined Iron Hubs | Keyed Iron Hubs | Misalignment Capability | ||||||||||||||
O'all Lg. | OD | Pitch | Pressure Angle | Choose an SAE Spline Size | Each | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | |||
2 3/16" | 2 7/64" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 000000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 000000 | ||
2 7/8" | 2 17/32" | 0.5" | 30° | 00000000 | 00000 | 00000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | ||
4 1/2" | 3 3/4" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 00000 | 5,000 | 1,240 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
Polyurethane Spiders | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Splined Iron Hubs | Keyed Iron Hubs | Misalignment Capability | ||||||||||||||
O'all Lg. | OD | Pitch | Pressure Angle | Choose an SAE Spline Size | Each | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | |||
2 3/16" | 2 7/64" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 000000 | 3,600 | 210 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 | ||
2 7/8" | 2 17/32" | 0.5" | 30° | 00000000 | 00000 | 00000000 | 00000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 | ||
4 1/2" | 3 3/4" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 00000 | 3,600 | 1,860 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 |
Hytrel Rubber Spiders | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Splined Iron Hubs | Keyed Iron Hubs | Misalignment Capability | ||||||||||||||
O'all Lg. | OD | Pitch | Pressure Angle | Choose an SAE Spline Size | Each | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | |||
2 3/16" | 2 7/64" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 000000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | ||
2 7/8" | 2 17/32" | 0.5" | 30° | 00000000 | 00000 | 00000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | ||
4 1/2" | 3 3/4" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 00000 | 3,600 | 3,705 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
Changeable-Size SDS-Max-Shank Masonry Core Drill Bits for Rotary Hammers
These bits allow you to switch to another size by changing only the bit body. They are hollow and cut with their outside edge for drilling large holes. The SDS-Max shank has three deep slots and two shallow slots for use with SDS-Max-drive rotary hammers. They cannot be used with SDS-Plus-drive rotary hammers.
Drill holes using simultaneous rotary and hammering action to break masonry material into tiny granules. This type of bit drills faster and penetrates material with less pressure than rotary-only bits. Also known as percussion or impact bits. To achieve maximum drilling depth, break up and remove the core every 4” before drilling deeper.
For technical drawings and 3-D models, click on a part number.
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Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Material | Specifications Met | Each | |
1 1/2" | 1.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 0000000 |
1 3/4" | 1.75" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
2" | 2" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
2 1/2" | 2.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
3" | 3" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
3 1/2" | 3.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
4" | 4" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
4 1/2" | 4.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
5" | 5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
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For Drill Bit Size | Material | Each | |
1 1/2", 1 3/4", 2 1/2", 2", 3 1/2", 3", 4 1/2", 4", 5" | Carbide-Tipped Steel | 0000000 | 000000 |
Changeable-Size Spline-Shank Masonry Core Drill Bits for Rotary Hammers
These bits allow you to switch to another size by changing only the bit body. They are hollow and cut with their outside edge for drilling large holes. The shank has 12 splines for use with a spline-drive rotary hammer. Drill holes using simultaneous rotary and hammering action to break masonry material into tiny granules. This type of bit drills faster and penetrates material with less pressure than rotary-only bits. Also called percussion or impact bits.
Drill bits include a pilot drill to make starting holes easier.
For technical drawings and 3-D models, click on a part number.
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Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Shank Type | Point Style | Specifications Met | For Use On | Includes | Each | |
Uncoated Carbide-Tipped Steel | ||||||||||
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1 1/2" | 1.5" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 0000000 |
1 3/4" | 1.75" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
2" | 2" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
2 1/2" | 2.5" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
3" | 3" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
3 1/2" | 3.5" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
4 1/2" | 4.5" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
5" | 5" | 17" | 12" | Spline | Standard | ANSI B212.15 | Masonry, Concrete | Pilot Drill | 00000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/308/3084a27p1-a02b-digital@halfx_635784398900000000.png?ver=imagenotfound)
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Material | Specifications Met | Each | |
1 1/2" | 1.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 0000000 |
1 3/4" | 1.75" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
2" | 2" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
2 1/2" | 2.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
3" | 3" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
3 1/2" | 3.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
4 1/2" | 4.5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
5" | 5" | 5" | Uncoated Carbide-Tipped Steel | ANSI B212.15 | 0000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/308/3084a132-@halfx_637230607396262891.png?ver=imagenotfound)
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Material | Each | |
Steel | 00000000 | 000000 |
For Drill Bit Size | Material | Each | |
1 1/2", 1 3/4", 2 1/2", 2", 3 1/2", 3", 4 1/2", 4", 5" | Carbide-Tipped Steel | 0000000 | 000000 |