When bearing installation and removal needs to be fast, reliable, and repeatable—custom withdrawal sleeves from Boremill Engineering are the answer. Engineered to exact client specifications, our sleeves simplify bearing dismounting and extend the service life of both shaft and bearing assembly.
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1. What is a Withdrawal Sleeve Used For?
Withdrawal sleeves are used to mount bearings with tapered bores onto stepped cylindrical shafts. Unlike adapter sleeves, withdrawal sleeves fit inside the bearing bore and are pushed onto the shaft using a lock nut or end plate. This design allows for easy dismounting, making them ideal for applications where bearings are regularly replaced, such as in pumps, crushers, electric motors, and railway gearboxes.
2. Why Go Custom with Boremill Engineering?
Off-the-shelf sleeves don’t always match your shaft or housing perfectly—especially in older or uniquely engineered machinery. That’s where Boremill comes in. We design and manufacture withdrawal sleeves to exacting dimensions, whether you're working from technical drawings or need us to reverse-engineer an existing component. This ensures better fitment, longer equipment life, and easier future maintenance.
3. Industries We Support
Our custom withdrawal sleeves are trusted by clients in mining, heavy industry, petrochemical, and rail infrastructure, especially where downtime is expensive and precision matters. We've built sleeves for use in Sasol plant components, underground mining equipment, and railway axle assemblies, conforming to ISO 9000 client standards throughout the process.
4. Total Machining Support – End to End
From CNC machining to fine-tolerance taper grinding and final testing, Boremill handles the full engineering process in-house. We match your locking nuts, shaft dimensions, and bearing tolerances to provide a complete solution. Our fitting department can also assist with on-site stripping, inspection, reporting, and fitment, supported by lifting equipment capable of handling 10 tons with ease.
