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

StyleModelKey SizeSae NumberLengthHeightLength ToleranceTypeFinishHardnessPrice (ex. VAT)Pkg. Qty.
AWKI0120050-025T1/8" x 1/2"30.486"0.047"0.481"Half MoonPlainRockwell B90€25.1925
AWKI0060050-100P1/16" x 1/2"131/64"0.0469"-0.003375" to +0.006625"Half MoonPlainRockwell B90€22.56100
AWKI0090050-100P3/32" x 1/2"231/64"0.0469"-0.003375" to +0.006625"Half MoonPlainRockwell B90€23.34100
StyleModelKey SizeSae NumberHeightTypeLengthFinishHardnessLength TolerancePrice (ex. VAT)Pkg. Qty.
AWKI0250100-025T1/4" x 1"150.4325"Half Moon63/64"PlainRockwell B90-0.002375" to +0.007625"€82.7525
AWKI0180100-100P3/16" x 1"131/16"Half Moon63/64"PlainRockwell B90-0.002375" to +0.007625"€63.03100
AWKI0310100-100P5/16" x 1"B0.0781"Half Moon63/64"PlainRockwell B90-0.002375" to +0.007625"€96.6825
GRAINGER -

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

StyleModelKey SizeSae NumberTypeLengthHeightFinishHardnessLength TolerancePrice (ex. VAT)Pkg. Qty.
AWKI0250075-100P1/4" x 3/4"91Half Moon47/64"1/16"PlainRockwell B90-0.004375" to +0.005625"€44.46100
AWKI0120075-100P1/8" x 3/4"7Half Moon47/64"1/16"PlainRockwell B90-0.004375" to +0.005625"€37.07100
BWKI0180075-100P3/16" x 3/4"9Half Moon47/64"1/16"PlainRockwell B90-0.004375" to +0.005625"€40.92100
AWKI0150075-100P5/32" x 3/4"8Half Moon47/64"1/16"PlainRockwell B90-0.004375" to +0.005625"€37.83100
StyleModelKey SizeSae NumberHeightTypeLengthFinishHardnessLength TolerancePrice (ex. VAT)Pkg. Qty.
AWKI0120062-100P1/8" x 5/8"51/16"Half Moon39/64"PlainRockwell B90-0.007375" to +0.002625"€27.44100
AWKI0180062-100P3/16" x 5/8"616/25"Half Moon39/64"PlainRockwell B90-0.007375" to +0.002625"€37.07100
AWKI0090062-100P3/32" x 5/8"41/16"Half Moon39/64"PlainRockwell B90-0.007375" to +0.002625"€26.2525
AWKI0150062-100P5/32" x 5/8"61/16"Half Moon39/64"PlainRockwell B90-0.007375" to +0.002625"€27.82100
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Half Moon Woodruff Key Stock

StyleModelKey SizeSae NumberLengthHeightLength ToleranceTypeFinishHardnessPrice (ex. VAT)Pkg. Qty.
AWKI0250125-100P--1 15/64"0.0781"-0.004375" to +0.005625"---€128.9225
BWWG-WKC-0241/4" x 1 1/2"241 1/2"0.641"-0.01" to 0"Half MoonPlainRockwell B90€13.8610
BWWG-WKC-0211/4" x 1 1/4"211 1/4"0.547"-0.01" to 0"Half MoonPlainRockwell B90€24.0625
BWWG-WKC-0181/4" x 1 1/8"181 1/8"0.484"-0.01" to 0"Half MoonPlainRockwell B90€19.1925
BWWG-WKC-0221/4" x 1 3/8"221 3/8"0.594"-0.01" to 0"Half MoonPlainRockwell B90€15.2910
BWWG-WKC-1411/4" x 1"1411"0.364"-0.01" to 0"Half MoonPlainRockwell B90€17.0525
BWWG-WKC-0151/4" x 1"151"0.438"-0.01" to 0"Half MoonPlainRockwell B90€13.8225
BWWG-WKC-0911/4" x 3/4"913/4"0.313"-0.01" to 0"Half MoonPlainRockwell B90€16.6350
AWKI0250087-025P1/4" x 7/8"A55/64"1/16"-0.003375" to +0.006625"Half MoonPlainRockwell B90€86.1625
BWWG-WKC-00A1/4" x 7/8"A7/8"3/8"-0.01" to 0"Half MoonPlainRockwell B90€24.2650
BWWG-WKC-0031/8" x 1/2"31/2"0.203"-0.01" to 0"Half MoonPlainRockwell B90€16.86100
BWWG-WKC-0071/8" x 3/4"73/4"0.313"-0.01" to 0"Half MoonPlainRockwell B90€17.42100
BWWG-WKC-0051/8" x 5/8"55/8"1/4"-0.01" to 0"Half MoonPlainRockwell B90€17.73100
BWWG-WKC-0011/16" x 1/2"11/2"0.203"-0.01" to 0"Half MoonPlainRockwell B90€17.04100
BWWG-WKC-00G3/8" x 1 1/2"G1 1/2"0.641"-0.01" to 0"Half MoonPlainRockwell B90€21.9410
BWWG-WKC-00E3/8" x 1 1/4"E1 1/4"0.547"-0.01" to 0"Half MoonPlainRockwell B90€13.9110
BWWG-WKC-00F3/8" x 1 3/8"F1 3/8"0.594"-0.01" to 0"Half MoonPlainRockwell B90€18.2210
BWWG-WKC-1523/8" x 1"1521"0.438"-0.01" to 0"Half MoonPlainRockwell B90€26.2825
BWWG-WKC-0193/16" x 1 1/4"191 1/4"0.547"-0.01" to 0"Half MoonPlainRockwell B90€19.1925
BWWG-WKC-0163/16" x 1 1/8"161 1/8"--Half MoonPlainRockwell B90€18.9325
AWKI0180112-100P3/16" x 1 1/8"161 7/64"12/25"-0.005375" to +0.004625"Half MoonPlainRockwell B90€76.03100
BWWG-WKC-0133/16" x 1"131"0.438"-0.01" to 0"Half MoonPlainRockwell B90€12.0825
BWWG-WKC-0093/16" x 3/4"93/4"0.313"-0.01" to 0"Half MoonPlainRockwell B90€22.76100
BWWG-WKC-0613/16" x 5/8"615/8"1/4"-0.01" to 0"Half MoonPlainRockwell B90€21.37100
BWWG-WKC-0113/16" x 7/8"117/8"3/8"-0.01" to 0"Half MoonPlainRockwell B90€18.1850

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.

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