Union Gear & Sprocket: Catalog Gears, Made to Order
Download the Union Gear & Sprocket Catalog (PDF – 7.39MB)Union Gear & Sprocket was a Quincy, Massachusetts catalog gear company. In 2002, Tracey Gear & Precision Shaft purchased the rights to the Union Gear & Sprocket name and catalog and converted the line from make-to-stock to make-to-order. Every Union Gear & Sprocket part is made when you order it, in our Pawtucket, Rhode Island facility under an ISO 9001:2015 certified quality system, 100% in the USA.
Because nothing is pulled from a shelf, you can order a catalog gear exactly as listed, or with the dimensions and features you need already built in.
Stop Buying Catalog Gears and Modifying Them
If you buy catalog gears and then rebore them, add keyways, or turn down hubs, you are paying for the gear and then paying again for the modification. When we make the gear to order with your modifications included, it is often comparable in cost to the catalog gear alone, especially at moderate quantities, and you skip the second operation entirely.
Union Gear & Sprocket Parts We Manufacture
- Racks
- Change gears (a type of spur gear)
- Spur gears
- Miter gears (1:1 bevel gears)
- Worms and worm gears
- Helical gears
- Sprockets
Modifications We Build In
Start with any catalog part and tell us what to add, remove, or change, for example:
- Bore size and tolerance
- Keyways and setscrews
- Hub diameter, length, or removal
- Face width
- Material
- Heat treatment
- Plating, passivation, or other finishes
Boston Gear, Martin, and Browning Equivalents
Union Gear & Sprocket, Boston Gear, Martin Sprocket & Gear, and Browning catalogs list many parts that are dimensionally identical. If you are buying a Boston Gear, Martin, or Browning catalog part and modifying it, send us the part number and your modifications, and we will quote it made to order.
What We Need to Quote
- The catalog part number (Union Gear & Sprocket, Boston Gear, Martin, or Browning). Union part numbers are listed in the Union Gear & Sprocket catalog
- Your modifications, in writing
- Material and heat treatment, if different from the catalog
- Quantity
The catalog page serves as the print, and your written modifications complete it. We do not work from worn or sample parts.
Lead Times
We do not stock parts. Every order is made to order, and lead time depends on the part, quantity, and modifications. We will give you a lead time with your quote. For urgent orders, ask about our Express Gear expedited service.
Read more about catalog gears vs. made-to-order.
Common Questions
Do you have Union Gear & Sprocket parts in stock?
No. Every Union Gear & Sprocket part is made to order, which is what lets us build in your modifications.
Can you make a Boston Gear equivalent with a different bore?
Yes. Send us the Boston Gear, Martin, or Browning part number and the bore, keyway, or other changes you need, and we will quote it made to order.
Do I need an engineering drawing?
No. For catalog parts, the catalog part number plus your written modifications is enough to quote.
Is it cheaper than buying a catalog gear and modifying it?
Often, especially at moderate quantities. A made-to-order gear with your modifications built in avoids paying for the catalog gear and a separate modification. We will quote both the part and the lead time so you can compare.
Boston Gear, Martin Sprocket & Gear, and Browning are trademarks of their respective owners. Tracey Gear & Precision Shaft is not affiliated with these companies. Part numbers are referenced for cross-reference purposes only.