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Woodruff Keys
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Side View |
Woodruff keys work well near shaft shoulders, where a standard open keyway would create too much stress. They are also often used on tapered shafts. These keys have a rounded shape that makes them easy to remove when parts need to be taken apart frequently, such as for maintenance or prototyping. Because they're usually shorter than standard machine keys, they work best in light duty applications. Use them to connect gears and other components to shafts. Also known as half moon keys.
1018-1045 Carbon Steel and 8630 Alloy Steel—Steel keys offer good strength.
316 Stainless Steel—316 stainless steel keys have excellent corrosion resistance, but aren't as strong as steel keys. They may be mildly magnetic.
Inch—Inch keys conform to ASME B17.2 standards for dimensions and tolerances.
Tolerance | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Woodruff Key No. | Wd. | For Keyway Dia. | Ht. | Lg. | Wd. | Ht. | Specs. Met | System of Measurement | Pkg. Qty. | Pkg. | |||
1018-1045 Carbon Steel | |||||||||||||
| 2 | 3/32" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A085 | 000000 | ||
| 4 | 3/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A095 | 00000 | ||
| 207 | 3/32" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 50 | 98481A060 | 00000 | ||
| 212 | 3/32" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 50 | 98481A070 | 00000 | ||
8630 Alloy Steel | |||||||||||||
| 2 | 3/32" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98525A085 | 00000 | ||
| 4 | 3/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98525A095 | 00000 | ||
| 207 | 3/32" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 25 | 98525A060 | 00000 | ||
| 212 | 3/32" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 50 | 98525A070 | 00000 | ||
316 Stainless Steel | |||||||||||||
| 2 | 3/32" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 5 | 97940A085 | 00000 | ||
| 207 | 3/32" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 97940A060 | 00000 | ||
| 212 | 3/32" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 97940A070 | 00000 | ||
Machine Key Stock
1008-1045 Carbon Steel
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1008-1045 carbon steel key stock is an economical choice with good strength.
Oversized Tolerance—Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. Press it into place for use in high-torque applications or to replace a key in a worn keyway.
Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
Tolerance | ||||||||
|---|---|---|---|---|---|---|---|---|
Ht. × Wd. | Tolerance Rating | Ht. | Wd. | Min. Hardness | Each | |||
12" Long | ||||||||
| 3/32" × 3/32" | Oversized | 0.000" to 0.002" | 0.000" to 0.002" | Rockwell B50 | 98830A050 | 00000 | ||
| 3/32" × 3/32" | Undersized | -0.002" to 0.000" | -0.002" to 0.000" | Rockwell B50 | 98830A512 | 0000 | ||
36" Long | ||||||||
| 3/32" × 3/32" | Oversized | 0.000" to 0.002" | 0.000" to 0.002" | Rockwell B50 | 98830A722 | 0000 | ||
| 3/32" × 3/32" | Undersized | -0.002" to 0.000" | -0.002" to 0.000" | Rockwell B50 | 98830A513 | 0000 | ||
Zinc-Plated 1008-1045 Carbon Steel
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Zinc-plated 1008-1045 carbon steel key stock is an economical choice with good strength and resists corrosion in wet environments.
Oversized Tolerance—Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. Press it into place for use in high-torque applications or to replace a key in a worn keyway.
Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
1095 Spring Steel
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Tolerance | ||||||||
|---|---|---|---|---|---|---|---|---|
Ht. × Wd. | Tolerance Rating | Ht. | Wd. | Min. Hardness | Each | |||
12" Long | ||||||||
| 3/32" × 3/32" | Standard | -0.001" to 0.001" | -0.001" to 0.001" | Rockwell B90 | 98535A125 | 00000 | ||
High-Profile Woodruff Keys
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Side View |
Feet prevent these keys from rocking in the keyseat, making it easier to install gears and other components. Woodruff keys work well near shaft shoulders, where a standard open keyway would create too much stress. They are also often used on tapered shafts. Because they're usually shorter than standard machine keys, they work best in light duty applications. Keys are made of steel. Also known as hi-pro keys.
Tolerance | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Woodruff Key No. | Wd. | Ht. | For Keyway Dia. | Lg. | Wd. | Ht. | Feet Ht. | Pkg. Qty. | Pkg. | |||
1018-1045 Carbon Steel | ||||||||||||
| 2 | 3/32" | 0.194" | 1/2" | 0.531" | 0.000" to 0.001" | 0.000" to 0.006" | 0.042" | 5 | 90049A213 | 00000 | ||
