# Boston Gear 30233813 F721-50-B5-G 50:1 Worm Gear Speed Reducer, 2.1" Center Distance, 56C Quill Flange, Left Side Solid Output Shaft - MROSupply.com ***Boston Gear 30233813 F721-50-B5-G 700 Series worm gear speed reducer with 50:1 single reduction ratio and 2.1" center distance. Cast iron housing with 56C quill flange input and left side solid output shaft. Output bore diameter is 1".*** ## Product details: - Catalog number: F721-50-B5-G - SKU: 42676 - Price: ***$889.84*** Each - Shipping: ***FREE SHIPPING*** ON ORDERS OVER $100 - Typically Ships in: 1 day - Brand: [Boston Gear](https://www.mrosupply.com/brands/boston-gear/) - Category: - [Quill Input Solid Output Shaft Left Worm Gear](htts://www.mrosupply.com/speed-reducers/right-angle-speed-reducers/right-angle-worm-gear-speed-reducers/quill-input-worm-gear-reducers/quill-input-solid-output-shaft-left-worm-gear/) - [Quill Input Worm Gear Reducers](htts://www.mrosupply.com/speed-reducers/right-angle-speed-reducers/right-angle-worm-gear-speed-reducers/quill-input-worm-gear-reducers/) - [Right Angle Worm Gear Speed Reducers](htts://www.mrosupply.com/speed-reducers/right-angle-speed-reducers/right-angle-worm-gear-speed-reducers/) - [Right Angle Speed Reducers](htts://www.mrosupply.com/speed-reducers/right-angle-speed-reducers/) - [Speed Reducers](htts://www.mrosupply.com/speed-reducers/) - Unit of measure: each - Weight: 24.100 lb - Technicall support: contact supplier for technical support on 800-626-2120 ## Product images: - https://static.mrosupply.com/images/noimage.webp ## Product attributes; - Bore/Shaft Diameter: 1" - Center Distance: 2.1" - Input Flange: 56C - Input Size: 56C - Input Style: Quill - Input Type: Flange - Output: Left - Output Type: Solid Output Shaft - Paint/Coating: Gray - Ratio: 50 to 1 - Reduction: Single - Shaft Projection: Left Side ## Alternate products to `Boston Gear 30233813 F721-50-B5-G 50:1 Worm Gear Speed Reducer, 2.1" Center Distance, 56C Quill Flange, Left Side Solid Output Shaft - MROSupply.com`: - [Grove Gear Flexaline GRG-BMQ821-60-L-56 (catalog GRG8210118.00) 60:1 single-reduction worm gear speed reducer with 2.06" center distance, 56C C-face quill input, 0.625" input bore, and 1" left-hand solid output shaft. Cast iron housing with blue paint. Designed for right-angle power transmission applications.](https://www.mrosupply.com/products/1339564/as-markdown/) - [Grove Gear IronMan GR-BMQ818-60-L-56 (catalog GR8180118.00) 60:1 ratio single-reduction worm gear speed reducer with 1.75" center distance. Features 56C quill input, 0.625" input diameter, and 0.875" solid output shaft with left-hand rotation. Cast iron housing with blue paint finish, Viton shaft seals, and base mounting. Delivers 689 lb-in output torque at 29 RPM with 0.449 HP input at 1750 RPM.](https://www.mrosupply.com/products/1328924/as-markdown/) - [Grove Gear Flexaline GRG-BMQ821-50-L-56 GRG8210117.00 50:1 ratio single-reduction cast iron worm gear speed reducer with 2.06" center distance. Features a 56C C-face quill input with 0.625" input diameter and a 1" left-hand solid output shaft. Part of the Flexaline series for interchangeability with legacy Flexaline mounting dimensions.](https://www.mrosupply.com/products/1339563/as-markdown/) - [Leeson M1130118.00 0.13 HP, 1750 RPM DC SCR motor with a 34 NEMA frame and Totally Enclosed Non-Ventilated enclosure. Operates on 180V DC armature voltage. Permanent magnet design for SCR drive control applications. Class F insulation, ball bearings.](https://www.mrosupply.com/products/227440/as-markdown/) - [WorldWide Electric HdRF175-50/1-L-56C cast iron right-angle worm gear reducer with 1.76-inch center distance, 50:1 ratio, and 56C quill input flange. Left-hand output shaft configuration. All-cast iron housing with double-lip oil seals and premium bearings for industrial durability. Output speed of 35 RPM at 1800 RPM input.](https://www.mrosupply.com/products/1848437/as-markdown/) - [Grove Gear GRL-BMQ821-60-L-56 GRL8210118.00 Leeson IronMan Interchange 60:1 ratio cast iron single-reduction worm gear speed reducer with 2.06" center distance. Features 56C C-face quill input, 0.625" input diameter, and 1" solid left-hand output shaft. Right-angle mount, blue painted finish, Viton shaft seals.](https://www.mrosupply.com/products/1341600/as-markdown/) - [WorldWide Electric HdRF206-50/1-L-56C cast iron right-angle worm gear reducer with 2.06-inch center distance, 50:1 ratio, and 56C quill input flange. Single left-hand output shaft. All-cast iron housing with double-lip oil seals and premium bearings for reliable speed reduction in conveyor, material handling, and industrial drive applications. Output speed of 35 RPM at 1800 RPM input.](https://www.mrosupply.com/products/1848438/as-markdown/) - [Dodge 17Q60L56 TIGEAR-2 worm gear speed reducer with 60:1 ratio, quill input, left side solid output shaft 0.875" diameter, 56C flange, and 1.7" center distance. Class 30 grey iron housing with green paint, 0.43 HP input, 0.27 HP output, 576 in-lb output torque, and 29 rpm maximum output speed. Suitable for right-angle applications requiring compact, maintenance-free operation.](https://www.mrosupply.com/products/141850/as-markdown/) ## Product's reviews: - Excellent customer service - The couplings are just what they are supposed to be. But I wanted to comment on MRO. This was my first order with them and I was extremely surprised at how well the company is run. I will be doing more business with them in the future. - Good seller - Catalogue item, good price, fast delivery = good seller - Shaft output is reversible - Description should say that shaft is reversible. Other than that perfect fit. Good communication from the shipping folks. - 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!