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Product Specifications:
| Item | Spur Gear |
| Bore Dia. | 5/8" |
| Bore Type | Minimum Plain Bore |
| Diametral Pitch | 20 |
| Face Width | 1/2" |
| Hardened Teeth | Without Hardened Teeth |
| Hub Dia. | 1.38" |
| Keyway | No Kwy, Setscrew |
| Keyway Size | No Keyway Or Set Screw |
| Length Through Bore | 1 1/8" |
| Material | Cast Iron |
| Maximum Rated Torque | 106 N-m @ 900 RPM |
| Maximum Torque Rating | 106 lbs.-in. @ 900 RPM |
| No. Of Teeth | 84 |
| Origin | Reborable |
| Outer Dia. | 4.23" |
| Pitch Dia. | 4.2" |
| Pressure Angle | 20° |
| Product Datasheet | boston-gear-g101.pdf |
| Set Screw | No |
| Style | Hub |
| Torque At 1200 Rpm | 87.8 lbs.-in. |
| Torque At 200 Rpm | 206 lbs.-in. |
| Torque At 300 Rpm | 181 lbs.-in. |
| Torque At 600 Rpm | 134 lbs.-in. |
| Torque At 900 Rpm | 106 lbs.-in. |
Shipping Info:
| Ship weight (kg) | 0.63 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
| Country of Origin | US |
Documentation:
Product Variants
| Product | Model | Diametral Pitch | Pitch Dia. | Hub Dia. | Type | Pressure Angle | Bore Dia. | Face Width | Hub Projection | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
YA80 | 20" | 4" | 1.38" | Web | 20° | 5/8" | 1/2" | 0.62" | €171.86 | |
![]() |
YA90 | 20" | 4 1/2" | 1.38" | Web | 20° | 5/8" | 1/2" | 0.62" | €189.49 | |
![]() |
YA100 | 20" | 5" | 1 1/2" | Web | 20° | 5/8" | 1/2" | 0.62" | €204.12 | |
![]() |
YA120 | 20" | 6" | 1 1/2" | Spoke | 20° | 5/8" | 1/2" | 0.62" | €261.84 | |
![]() |
YA140 | 20" | 7" | 1 1/2" | Spoke | 20° | 5/8" | 1/2" | 0.62" | €384.83 | |
![]() |
YA160 | 20 | 8" | 1 1/2" | D | 20° | 5/8" | 1/2" | - | €824.18 | |
![]() |
YA180 | 20 | 9" | 1 3/4" | D | 20° | 5/8" | 1/2" | - | €828.80 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
BOSTON GEAR YA84 Spur Gear, 20 Diametral Pitch, 20 Deg. Pressure Angle, 84 Teeth, Cast Iron
€186.66 /unit







