Woodruff Key Stock

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Woodruff key stocks are rounded machine keys. They have a half-moon shape for use on a mating half-mooned keyway that is milled near the end of the shaft. These woodruff keys, also known as...Read more

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Half Moon Woodruff Key Stock

StyleModelKey SizeSae NumberHeightLength ToleranceTypeFinishHardnessTensile StrengthPricePkg. Qty.
AWKI0250125-100P--0.0781"-0.004375" to +0.005625"----€133.1325
BWWG-WKC-0241/4" x 1 1/2"240.641"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€16.2710
BWWG-WKC-0211/4" x 1 1/4"210.547"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€29.0225
BWWG-WKC-0181/4" x 1 1/8"180.484"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€28.2725
BWWG-WKC-0221/4" x 1 3/8"220.594"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€20.4310
BWWG-WKC-0151/4" x 1"150.438"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€17.4325
BWWG-WKC-1411/4" x 1"1410.364"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€20.4525
BWWG-WKC-0911/4" x 3/4"910.313"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€21.7450
AWKI0250087-025P1/4" x 7/8"A1/16"-0.003375" to +0.006625"Half MoonPlainRockwell B9072000 psi€88.9725
BWWG-WKC-00A1/4" x 7/8"A3/8"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€31.8250
BWWG-WKC-0031/8" x 1/2"30.203"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€20.33100
BWWG-WKC-0071/8" x 3/4"70.313"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€21.05100
BWWG-WKC-0051/8" x 5/8"51/4"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€22.83100
BWWG-WKC-0011/16" x 1/2"10.203"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€20.73100
BWWG-WKC-00G3/8" x 1 1/2"G0.641"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€28.2710
BWWG-WKC-00E3/8" x 1 1/4"E0.547"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€17.8610
BWWG-WKC-00F3/8" x 1 3/8"F0.594"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€21.9710
BWWG-WKC-1523/8" x 1"1520.438"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€34.0325
BWWG-WKC-0193/16" x 1 1/4"190.547"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€23.4525
BWWG-WKC-0163/16" x 1 1/8"16--Half MoonPlainRockwell B9072000 psi€24.0225
AWKI0180112-100P3/16" x 1 1/8"1612/25"-0.005375" to +0.004625"Half MoonPlainRockwell B9072000 psi€78.50100
BWWG-WKC-0133/16" x 1"130.438"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€15.6825
BWWG-WKC-0093/16" x 3/4"90.313"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€31.69100
BWWG-WKC-0613/16" x 5/8"611/4"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€26.00100
BWWG-WKC-0113/16" x 7/8"113/8"-0.01" to 0"Half MoonPlainRockwell B9072000 psi€26.5050
StyleModelKey SizeSae NumberHeightTypeFinishHardnessLength ToleranceTensile StrengthPricePkg. Qty.
AWKI0120062-100P1/8" x 5/8"51/16"Half MoonPlainRockwell B90-0.007375" to +0.002625"72000 psi€28.14100
AWKI0180062-100P3/16" x 5/8"616/25"Half MoonPlainRockwell B90-0.007375" to +0.002625"72000 psi€38.27100
AWKI0090062-100P3/32" x 5/8"41/16"Half MoonPlainRockwell B90-0.007375" to +0.002625"72000 psi€27.0925
AWKI0150062-100P5/32" x 5/8"61/16"Half MoonPlainRockwell B90-0.007375" to +0.002625"72000 psi€28.72100
StyleModelKey SizeSae NumberHeightLength ToleranceTypeFinishHardnessTensile StrengthPricePkg. Qty.
AWKI0120050-025T1/8" x 1/2"30.047"0.481"Half MoonPlainRockwell B9072000 psi€25.4925
AWKI0060050-100P1/16" x 1/2"10.0469"-0.003375" to +0.006625"Half MoonPlainRockwell B9072000 psi€23.28100
AWKI0090050-100P3/32" x 1/2"20.0469"-0.003375" to +0.006625"Half MoonPlainRockwell B9072000 psi€24.44100
StyleModelKey SizeSae NumberHeightTypeFinishHardnessLength ToleranceTensile StrengthPricePkg. Qty.
AWKI0250100-025T1/4" x 1"150.4325"Half MoonPlainRockwell B90-0.002375" to +0.007625"72000 psi€85.4625
AWKI0180100-100P3/16" x 1"131/16"Half MoonPlainRockwell B90-0.002375" to +0.007625"72000 psi€65.08100
AWKI0310100-100P5/16" x 1"B0.0781"Half MoonPlainRockwell B90-0.002375" to +0.007625"72000 psi€99.8125
GRAINGER -

Half Moon 0.735" Length C-1035 Steel Woodruff Key Stock

StyleModelKey SizeSae NumberTypeHeightFinishHardnessLength ToleranceTensile StrengthPricePkg. Qty.
AWKI0180075-100P--------€42.23100
BWKI0250075-100P1/4" x 3/4"91Half Moon1/16"PlainRockwell B90-0.004375" to +0.005625"72000 psi€45.90100
BWKI0120075-100P1/8" x 3/4"7Half Moon1/16"PlainRockwell B90-0.004375" to +0.005625"72000 psi€38.27100
BWKI0150075-100P5/32" x 3/4"8Half Moon1/16"PlainRockwell B90-0.004375" to +0.005625"72000 psi€39.08100
PARKER -

Woodruff Key, Steel, 3/16 X 3/4 Inch Size

ModelItemPrice (ex. VAT)Pkg. Qty.
B8544-606EB8TDU€46.42
1

Woodruff Key Stock

Woodruff key stocks are rounded machine keys. They have a half-moon shape for use on a mating half-mooned keyway that is milled near the end of the shaft. These woodruff keys, also known as half?moon keys, lock the mated gear / hub to the shaft by using their protruding flat face, allowing a tight fit. This prevents the independent movement of the attached hubs / gears / components from the rotating shaft / spindle and ensures better torque transfer. Raptor Supplies offers woodruff key stocks from brands like Gorlitz, Grainger & Vulcan Hart. They also protect expensive parts / components by acting as a fail-safe and shearing under excess loads to absorb / disperse the turning shaft's energy.

Frequently Asked Questions

What are the advantages of woodruff keys?

  • Woodruff key stocks may be used over key slots of tapered shafts as they can get aligned via slight rotation in their seat.
  • The extra key depth in the shaft prevent slipping over the shafts.
  • Since they are not fitted at the shaft end, stress concentration is reduced at the shaft end.
  • These keys are ideal for assemblies that are rotating at high speeds.

How to install a woodruff key?

  • Press the key into the semi-circular key slot (milled into the shaft). Tap the flat, protruding key face using a hammer / mallet to seat the key firmly.
  • Allign the flat surface parallel to the shaft. The key face may extend above the shaft's surface to lock the mated component in place.
  • During installation, if the key slips out of the grooved key slot, then either the size is too small or the key is not press-fitted properly.