Jack Shaft Manufacturing

A jack shaft, also known as an intermediate shaft or countershaft, is a secondary shaft used in transmission systems to transfer power between primary drive components. Jack shafts allow for speed reduction, direction changes, and power distribution in machinery and vehicle transmissions.

We manufacture jack shafts from alloy steel, carbon steel, and other high-strength materials. Material selection depends on torque requirements, operating speed, and application environment. All materials undergo proper heat treatment to achieve optimal hardness and strength properties.

Yes, we specialize in custom jack shaft engineering and manufacturing. Our team works from your specifications to produce shafts with exact dimensions, spline configurations, keyway placements, and bearing surfaces tailored to your transmission or machinery requirements.

We manufacture jack shafts with various spline types including involute splines, straight-sided splines, and custom spline profiles. All splines are precision CNC machined to ensure proper fit and torque transmission capacity according to your specifications.

Every jack shaft undergoes comprehensive quality testing including dimensional verification, straightness measurement up to .0002″, hardness testing, spline dimension verification, runout testing, and dynamic balancing. We provide detailed inspection reports with all deliveries.

We offer various surface treatments including heat treatment, induction hardening, nitriding, zinc plating, and grinding. Surface treatment selection depends on your application requirements for wear resistance, hardness, and operating environment conditions.