We never sell your data to third parties
Boston Gear YPB4821 30235490 steel spur gear with 48 diametral pitch, 21 teeth, and 20° pressure angle. Precision open gearing for general industrial drives, machine tools, and power transmission applications.
MODEL YPB4821
Contact supplier for technical support on: 800-626-2120
$30.81 Each
Prices are subject to change
FREE SHIPPING ON ORDERS OVER $100
Select Quantity
Typically Ships in: 1 day
Returnable: See conditions
Boston Gear spur gears are designed to transmit motion and power between parallel shafts. The different styles offered include spur, gear rack, pinion wire, stem pinions, and internal gears, and most come with a selection of bore diameters, keyways, and setscrews to accommodate a wide variety of application requirements. They are available in plastic, non-metallic, brass, steel, and cast iron and are manufactured in a variety of styles, including plain, web, web with lightening holes, and web with spokes. Many are available with or without hubs. Boston Gear manufactures both 14 1/2° and 20° Pa, involute, full-depth system gears. While 20° Pa is generally recognized as having a higher load-carrying capacity, 14 1/2° Pa gears are used extensively because of lower backlash and smoother, quieter operation. Just ask your Csr which is best for you. And remember that spur gears and rack are available via our assured Same Day Shipment Program.
| Product Family | Spur Gears |
|---|---|
| Diametrical Pitch | 48 |
| Product Description | Spur Gear, 48 DP, 20 Pa, 21 Teeth, Molded Delrin |
| Altra Master No. | 30235490 |
| Pressure Angle | 20 Degree Pressure Angle |
| Material | Molded Delrin |
| Bore Size | 0.125 |
| Upc | 781711539453 |
| Face Width | 0.125 |
| Family Id | 30, 089 |
| Weight | 0.011 |
| Keyway | No Kwy or Setscrew |
| Pitch Diameter | 0.438 |
| Outside Diameter | 0.480 |
| No Of Teeth | 21 |
| Hub Diameter | 0.340 |
| Setscrew Other | No Setscrew |
| Unit Of Measure | English |
SKU: 32204
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.
Read moreSKU: 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: 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 more
| Brand | Electra/Grove Gear |
| Model | GRL8320023.00 |
| Brand | Martin Sprocket |
| Model | TS1621 |
| Brand | NSK Bearings |
| Model | 1030-1.1/8G |
SKU: 32204
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.
Read moreSKU: 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: 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 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/