Pneumatic High-Torque Design, Safer & Longer Service Life
This air-driven crankshaft polisher adopts a high-power air motor with stable torque output for uniform crankshaft journal polishing. Unlike electric polishers, it avoids motor burnout caused by metal dust accumulation, featuring lower maintenance cost and safer operation in oily engine repair environments. It matches multiple abrasive belts (240/320/400 grit) to remove scratches, taper and wear marks on crankshaft surfaces perfectly.
Ultra-Light Portable Structure, Easy Operation for All Workshops
Weighing only 6.5 kg with an ergonomic handheld frame, the CPA100 polisher delivers flexible multi-angle operation without heavy fixed equipment. Compact size saves workshop space, suitable for passenger cars, trucks and agricultural machinery crankshaft refurbishment. It greatly improves polishing efficiency and surface finish, a cost-effective essential tool for engine rebuilding garages and fleet maintenance centers.
Standard Parts & Accessories List
| Part Number | Description | Qty |
|---|---|---|
| Hp72/brack/complete | Fixed Bracket | 1 |
| CF65200604 | 90°-Air Fitting | 2 |
| APM45/Kit | Air Motor Replacement | 1 |
| V8107/Kit | Air Valve Kit | 1 |
| AP19a/frame/only | Top Frame Only | 1 |
| AP19b/frame/only | Bottom Frame Only | 1 |
| AP72B/Kit | Roller kit – For 3/4″–1-1/4″ Wide belts | 1-set |
| AP72D/Kit | Roller kit – For 1-1/4″–2″ Wide belts | 1-set |
| HP72121C/Complete | Adjustable Bracket Assy With Screws | 1 |
| HP72121E Bracket Only | For new E Bracket See fig.2 | 1 |
| 38PH | Air Hose – Nylon | 16″ |
| G6102 | Replacement Handle Grips | 2 |
| K4146 | Small Star Knob 1/4-20 thread | 1 |
| K4147 | Large Star Knob 3/8″-16 thread | 1 |
| HP72121E/Spacer | Inlet Spacers | 1-set |
FAQ
1. Why is crankshaft polishing necessary after grinding?
After crankshaft grinding, polishing improves the surface finish of journal surfaces and helps remove fine machining marks, minor scratches, and surface imperfections. A smoother journal surface improves bearing contact, oil film stability, and helps extend engine service life.
2. What parts of a crankshaft can the CPA100 polish?
The CPA100 is designed for polishing crankshaft journals, including main journals and connecting rod journals. It is commonly used after crankshaft grinding or repair operations to achieve a smoother and more refined surface finish before engine assembly.
3. Why choose a pneumatic crankshaft polisher instead of an electric polishing tool?
The CPA100 uses a high-torque air motor, which is suitable for demanding workshop environments. Compared with electric motors, pneumatic operation avoids common problems caused by abrasive dust entering motor components, while providing stable performance and safer operation in engine rebuilding workshops.
4. Can the CPA100 be used in professional engine rebuilding workshops?
Yes. The CPA100 is designed for engine machine shops, crankshaft repair centers, and engine remanufacturing workshops that need a flexible finishing tool after crankshaft machining. Its portable design allows technicians to perform polishing operations efficiently without requiring a large dedicated machine.
5. How does the CPA100 improve crankshaft repair quality?
The CPA100 uses abrasive belts with different grit options to achieve controlled polishing results. Proper polishing helps improve journal surface smoothness, reduce friction, and prepare the crankshaft for reliable bearing operation after rebuilding.
