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Product Specifications:
| Item | Reducer |
| Base Mounting Attachment | No Base |
| Bore Code | B9 |
| Fan Cooled Rating | No |
| Input Motor Hp | 7.5 hp At AGMA Service Class I |
| Input Power | 8.99 hp |
| Input Style | F Standard Quill Flange |
| Max. Output Torque Capacity | 1258 lbs.-in. |
| Motor Hp | 7 1/2 hp |
| Output Speed | 437 RPM |
| Ratio | 4 |
| Reduction Type | Hm Series Parallel Shaft |
Shipping Info:
| Ship weight (kg) | 0.02 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
| Country of Origin | US |
Product Variants
| Product | Model | Output Speed | Output Torque | Ratio | Reduction Type | Max. Output Torque Capacity | Bore Code | Input Power | Motor Frame Size | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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HMF3-4K-B9-B9 | 437 RPM | 1258 lbs.-in. | 4:1 | - | - | - | - | B9180TC210C | €1,557.53 | |
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HMF1-5K-B5-B5 | 350 RPM | 183 lbs.-in. | 5:1 | - | - | - | - | B556C | €1,073.57 | |
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HMF2-4K-B7-B7 | 437 RPM | 962 lbs.-in. | 4:1 | - | - | - | - | B7140TC180C | €1,288.40 | |
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HMF2-3K-B7-B7 | 583 RPM | 944 lbs.-in. | 3:1 | - | - | - | - | B7140TC180C | €1,288.40 | |
![]() |
HMF1-1.5K-B5-B5 | 1167 RPM | 172 lbs.-in. | 1.5:1 | - | - | - | - | B556C | €1,073.57 | |
![]() |
HMF2-5K-B7-B5 | 350 RPM | 884 lbs.-in. | 5:1 | - | - | - | - | B7140TC180C | €1,288.40 | |
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HMF3-2K-B9-B9 | 875 RPM | 1075 lbs.-in. | 2:1 | - | - | - | - | B9180TC210C | €1,557.53 |
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BOSTON GEAR HMF3-4-B9-B11 Helical Multiplier Reducer, Size 3, 4:1 Ratio
€641.60 /unit







