Splines & Spline Shafts Made to Your Print
Tracey Gear & Precision Shaft manufactures spline shafts, external splines, and internal splines to customer blueprints, including inch and metric involute splines, straight-sided splines, and serrations. Every part is made in our Pawtucket, Rhode Island facility under an ISO 9001:2015 certified quality system, in small to medium production runs, 100% in the USA.
We are a build-to-print shop. You supply a complete engineering drawing, and we develop the manufacturing method to hold the spline data, tolerances, and finishes it calls out.
Spline Types We Manufacture
- Involute splines, inch and metric, external and internal, flat root and full fillet root
- Straight-sided splines, external and internal
- Serrations, external and internal
- Spline shafts combining splines with turned, ground, and threaded features on a single part
Spline Standards
We manufacture to the standard and fit class called out on your drawing, including:
- ANSI B92.1-1970 (inch involute splines)
- ANSI B92.2M-1980 (metric involute splines)
- ASA B5.15-1950 (legacy inch involute splines)
- DIN 5480 (metric involute splines)
- DIN 5482 (involute splines)
How We Make Them
- We cut external splines on our CNC gear cutting equipment
- We broach or shape internal splines, depending on the part and available tooling. See also internal spur gears & internal splines
- We produce shaft blanks by CNC turning & milling
- We finish bearing journals and critical diameters by CNC grinding
- We produce threaded ends by CNC thread grinding
External Spline Capabilities
- Parts 12″ and longer: up to 60″ between centers and up to 6″ in diameter
- Parts under 12″ long: up to 36″ in diameter
- Lot sizes: small to medium production runs
Materials
Our spline work is primarily in steel and stainless steel, and we quote other materials as specified on your print. Your drawing must call out the material. We do not recommend or select materials.
Industries We Serve
- Military & defense suppliers
- Pump & valve manufacturers
- Canning & food processing equipment manufacturers
- Machinery builders
Common Questions About Our Spline Work
What size spline shafts can you make?
We manufacture external spline shafts up to 60″ long between centers and up to 6″ in diameter. For parts under 12″ long, we can cut external splines up to 36″ in diameter.
What spline standards do you manufacture to?
We manufacture to ANSI B92.1-1970, ANSI B92.2M-1980, ASA B5.15-1950, DIN 5480, and DIN 5482, using the fit class specified on your drawing.
Can you make splines to older prints that call out ASA B5.15-1950?
Yes. We regularly manufacture to legacy prints, including ASA B5.15-1950, which still appears on many older military and pump drawings.
Do you make metric splines?
Yes. We manufacture metric involute splines to DIN 5480, DIN 5482, and ANSI B92.2M-1980.
Do you broach or shape internal splines?
Both. If we have a broach for your spline, we broach it. If we do not, or if the spline is in a blind bore or against a shoulder, we shape it.
Can you make a spline shaft from a sample part?
No. We do not reverse engineer parts or work from samples. We require a complete engineering drawing.
What We Need to Quote
Please send a complete engineering blueprint that includes:
- Full spline data: number of teeth, pitch or module, pressure angle, major and minor diameters, root type, fit class, and governing standard
- Material and any heat treatment
- Dimensions and tolerances
- Surface finish requirements
- Any additional processes (plating, coating, etc.)
- Quantity