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Product Specifications:
| Item | Spur Gear |
| Bore Size | 1" |
| Bore Type | Bored To Size |
| Diametral Pitch | 6 |
| Hardened Teeth | Without Hardened Teeth |
| Hub Dia. | 2.95" |
| Keyway | With Setscrew |
| Length Through Bore | 2 7/8" |
| Material | Steel |
| No. Of Teeth | 21 |
| Outer Dia. | 3.83" |
| Pitch Dia. | 3 1/2" |
| Pressure Angle | 20° |
| Set Screw | Yes |
| Set Screw Size | 1 |
| Torque At 1200 Rpm | 1345 lbs.-in. |
| Torque At 200 Rpm | 2919 lbs.-in. |
| Torque At 300 Rpm | 2613 lbs.-in. |
| Torque At 600 Rpm | 1988 lbs.-in. |
| Torque At 900 Rpm | 1605 lbs.-in. |
| Type | A |
Shipping Info:
| Ship weight (kg) | 2.93 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
| Country of Origin | US |
Product Variants
| Product | Model | Diametral Pitch | Number Of Teeth | Pitch Dia. | Hub Dia. | Keyway | Type | Pressure Angle | Face Width | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
YJ12 | 6 | 12 | - | - | No Kwy Or Setscrew | - | 20° | 2" | €177.85 | |
![]() |
YJ14 | 6 | 14 | - | - | No Kwy Or Setscrew | - | 20° | 2" | €201.74 | |
![]() |
YJ15 | 6 | 15 | - | - | No Kwy Or Setscrew | - | 20° | 2" | €218.94 | |
![]() |
YJ16 | 6 | 16 | - | - | No Kwy Or Setscrew | - | 20° | 2" | €221.78 | |
![]() |
YJ18 | 6 | 18 | - | - | No Kwy Or Setscrew | - | 20° | 2" | €244.20 | |
![]() |
YJ21 | 6 | 21 | - | - | No Kwy Or Setscrew | - | 20° | 2" | €299.03 | |
![]() |
YJ24A | 6" | - | 4" | 3" | - | Plain | 20° | 2" | €358.21 |
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Contact us
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BOSTON GEAR YJ21-1 External Tooth Spur Gear
€364.32 /unit







