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Boston Gear 30267217 842BF-3.9K-M8 helical speed reducer with 3.9:1 ratio. This unit features a compact helical gear design for efficient power transmission in industrial applications. The reducer is built with precision-cut helical gears for quiet operation and high torque capacity.
MODEL 842BF-3.9K-M8
Contact supplier for technical support on: 800-626-2120
$1,497.57 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable: See conditions
Boston Gear 800 Series contains a focused selection of compact, heavy duty helical gear drives that offer long-life performance and simplified maintenance. A broad range of reduction ratios suit an even broader range of specifications, while a variety of input shaft configurations maximize flexibility. In addition, the number of products that complement this series of gear drives make it an ideal choice for today industrial distributor. The 800 Series provides a functional interchange for SEW Eurodrive and other European manufacturers’ helical gear drives,making it uniquely practical for replacement applications.
| Pre-Lubricated | Yes |
|---|---|
| Ratio | 3.9:1 |
| Max Input HP | 6.96 |
| Fan Cooled | No |
| Unit Of Measure Show | English |
| Output RPM @1750 | 448.0 |
| Output Shaft Style | Solid Projecting |
| Product Family | 800B In-Line |
| Exact Gear Ratio | 3.948 |
| Product Description | 842 D/R RED, 3.9 Ratio, O/P Flange Mount |
| Rated Efficiency | 98% |
| Base | Output Flange Mounted |
| Max Output Torque Cap | 959 |
| Input Frame Size | None |
| Input Style | Projecting Input Shaft |
| Reduction Stages | Double |
| Weight | 29 |
| Motor HP | 5 |
| Recommended Lubrication | Klubersynth UH1 6-460 |
| Family Id | 30,079 |
| AGMA Service Class | I |
| Output Shaft O.D./Bore Size | 1 |
SKU: 36216
Worm
Haven't used them yet, but they match the worm gear perfectly. They should serve the purpose for which I purchased them.
Read moreSKU: 42691
Purchase
Great pricing - Fast shipping - A vendor I have used in the past and will again in the future.
Read moreSKU: 38771
Gear box oil
This has been very hard to find. It’s the oil spec’ed for my 1950s Rockwell wedge bed planer gear box. I haven’t found it anyplace else.
Read more
| Brand | Tingley |
| Model | S62217-XL |
SKU: 36216
Worm
Haven't used them yet, but they match the worm gear perfectly. They should serve the purpose for which I purchased them.
Read moreSKU: 42691
Purchase
Great pricing - Fast shipping - A vendor I have used in the past and will again in the future.
Read moreSKU: 38771
Gear box oil
This has been very hard to find. It’s the oil spec’ed for my 1950s Rockwell wedge bed planer gear box. I haven’t found it anyplace else.
Read moreItem must be unused.
Item must be in it's original package.
25% Restocking, shipping and handling fees may apply to any return with this manufacturer.
For more information please consult https://www.mrosupply.com/page/returnwarranty-policy/