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Boston Gear 30267184 842B-3.9K-M1 helical speed reducer with 3.9:1 ratio. Helical gear design provides smooth, quiet operation for industrial power transmission applications. The 842B series delivers reliable speed reduction for conveyors, material handling, and general machinery drives.
MODEL 842B-3.9K-M1
Contact supplier for technical support on: 800-626-2120
$1,239.85 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, Base Mount |
| Rated Efficiency | 98% |
| Base | Base Mounted |
| Max Output Torque Cap | 959 |
| Input Frame Size | None |
| Input Style | Projecting Input Shaft |
| Reduction Stages | Double |
| Weight | 25 |
| Motor HP | 5 |
| Recommended Lubrication | Klubersynth Uh1 6-460 |
| Family Id | 30, 077 |
| AGMA Service Class | I |
| Output Shaft O.D./Bore Size | 1 |
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: 42691
Purchase
Great pricing - Fast shipping - A vendor I have used in the past and will again in the future.
Read moreSKU: 34959
Needle gear
I'm very happy with my purchase. I found exactly what I was looking for and I received it in a couple days. I will recommend your company to others and I hope I can deal with you again. Thank you!
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: 42691
Purchase
Great pricing - Fast shipping - A vendor I have used in the past and will again in the future.
Read moreSKU: 34959
Needle gear
I'm very happy with my purchase. I found exactly what I was looking for and I received it in a couple days. I will recommend your company to others and I hope I can deal with you again. Thank you!
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/