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Product Specifications:
| Item | Spur Gear |
| Bore Size | 1/2" |
| Bore Type | Bored To Size |
| Diametral Pitch | 20 |
| Hardened Teeth | Without Hardened Teeth |
| Hub Dia. | 0.97" |
| Keyway | With Setscrew |
| Length Through Bore | 15/16" |
| Material | Steel |
| No. Of Teeth | 25 |
| Outer Dia. | 1.35" |
| Pitch Dia. | 1 1/4" |
| Pressure Angle | 20° |
| Set Screw | Yes |
| Set Screw Size | 0.5 |
| Torque At 1200 Rpm | 64.1 lbs.-in. |
| Torque At 1800 Rpm | 53.5 lbs.-in. |
| Torque At 200 Rpm | 95.6 lbs.-in. |
| Torque At 300 Rpm | 91.1 lbs.-in. |
| Torque At 600 Rpm | 79.9 lbs.-in. |
| Torque At 900 Rpm | 71.1 lbs.-in. |
| Type | A |
Shipping Info:
| Ship weight (kg) | 0.11 |
| 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 | Pitch Dia. | Hub Dia. | Face Width | Bore Dia. | Hub Projection | Number Of Teeth | Type | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
YA14-5/16 | 20 | 0.7" | 0.55" | - | - | - | - | A | €73.92 | |
![]() |
YA12 | 20 | - | - | 0.5" | - | - | 12 | - | €55.84 | |
![]() |
YA14 | 20" | 0.7" | 0.55" | 1/2" | 0.313" | 11/25" | - | Plain | €60.93 | |
![]() |
YA15 | 20 | - | - | 0.5" | - | - | 15 | - | €58.78 | |
![]() |
YA16 | 20" | 4/5" | 16/25" | 1/2" | 3/8" | 11/25" | - | Plain | €60.47 | |
![]() |
YA18 | 20" | 0.9" | 3/4" | 1/2" | 3/8" | 11/25" | - | Plain | - | RFQ
|
![]() |
YA20 | 20" | 1" | 21/25" | 1/2" | 1/2" | 11/25" | - | Plain | €61.68 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
BOSTON GEAR YA25-1/2 External Tooth Spur Gear
€83.87 /unit







