Spline Repair of an Electric Motor Armature A client who works in the electric motor industry approached Butler Gear Enterprises, LLC. to spline repair an armature. To complete the spline repair we removed the existing teeth and TIG welded the shaft with sufficient materials for machining. Then we re-turned and re-hobbed the spline to meet customer-supplied specifications. Finally, we sent the armature to a top heat-treatment specialist to heat-treat the spline end.
The 25 lbs armature, which measured 18.5" long and .983" in outside diameter, was welded with 4140 materials and repaired in just 2 weeks. Following inspection, it was shipped to the client's Milwaukee, Wisconsin location. For more details about this spline repair, please see the details below. For any questions about our other industry-leading services please contact Butler Gear. 
Spline Repair of Armature Project Highlights
| Product Description |
This Armature is used within an electric motor application |
| Capabilities Applied/Processes |
Spline Repair
- Remove Teeth
- Weld (TIG) - Weld Shaft w/ Sufficient Material for Machining
- Re-Turned (Turn off Spline)
|
- Turn Diameter for Re-Hobbing (1.5 Module, 20°PA, 14 Teeth
- Heat Treatment (Heat Treat Spline End)
|
|
| Equipment Used to Manufacture Part |
Lathe
Hobbing Equipment |
Induction Heat Treating Equipment (was outsourced) |
|
| Overall Part Dimensions |
Length: 18.5"
O.D.: Ø.983" |
| Tightest Tolerances |
.001 |
| Material Used |
Welded with 4140 materials |
| Hardness |
50Rc+ |
| In process testing/Inspection performed |
100% Inspection & Document |
| Estimated Part Weight |
25 lbs |
| Industry for Use |
Electric Motor |
| Volume |
1 |
| Turn Around Time |
2 Weeks |
| Delivery Location |
Milwaukee, Wisconsin |
| Standards Met |
Customer supplied print, 2D CAD Drawing
ISO 9001:2015 |
| Product Name |
Spline Repair of Electric Motor Armature |
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262.781.3270
gears@butlergear.com
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