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Boston Gear 30267390 872B-3.9K-M1 helical speed reducer with a 3.9:1 ratio. This unit features a helical gear design for smooth, quiet operation and high efficiency in industrial power transmission applications. The cast iron housing provides durability and thermal capacity for continuous duty.
MODEL 872B-3.9K-M1
Contact supplier for technical support on: 800-626-2120
$2,887.67 Each
Prices are subject to change
FREE SHIPPING ON ORDERS OVER $100
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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 | 21.2 |
| 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 | 3.92 |
| Product Description | 872 D/R RED, 3.9 Ratio, Base Mount |
| Rated Efficiency | 96% |
| Base | Base Mounted |
| Max Output Torque Cap | 2902 |
| Input Frame Size | None |
| Input Style | Projecting Input Shaft |
| Reduction Stages | Double |
| Weight | 92 |
| Motor HP | 10 |
| Recommended Lubrication | Klubersynth UH1 6-460 |
| Family Id | 30,077 |
| AGMA Service Class | III |
| Output Shaft O.D./Bore Size | 1.625 |
SKU: 34746
Fast shipping
I ordered this part hoping it would arrive within 2 weeks because I had an emergency situation with an employee waiting to repair a piece of equipment at a customer’s location. The part actually arrived halfway across the country in 5 days including the weekend. MRO processed, packaged and shipped it with incredible speed. Thanks again!
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 moreSKU: 564304
Good quality, fast delivery.
Easy ordering, don't have a minimum quantity, and fast delivery. Very satisfied with order.
Read more
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SKU: 34746
Fast shipping
I ordered this part hoping it would arrive within 2 weeks because I had an emergency situation with an employee waiting to repair a piece of equipment at a customer’s location. The part actually arrived halfway across the country in 5 days including the weekend. MRO processed, packaged and shipped it with incredible speed. Thanks again!
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 moreSKU: 564304
Good quality, fast delivery.
Easy ordering, don't have a minimum quantity, and fast delivery. Very satisfied with order.
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/