MateAuto Motorcycle Blind Hole Collet Bearing Puller Set 12‑Piece — 8–32mm Internal Extractor with 360mm Slide Hammer

The MateAuto 12-piece blind hole collet bearing puller set is a compact internal bearing extraction kit that removes recessed bearings and bushings from 8–32 mm using expandable collets and a 360 mm slide hammer.

If you work on motorcycles, small cars or light machinery and need to pull bearings that sit inside a bore, this kit provides a straightforward mechanical solution. The set combines eight expandable collets, a robust slide hammer, and fittings organized in a portable case so you can reach recessed parts without machining or complex fixtures. Built of hardened carbon steel and stored in a molded carry box, the kit aims to balance strength, versatility and portability for DIYers and professional mechanics alike.

How does the collet system grip internal bearings securely?

The collets expand inside the bore and lock against the inner surface of the bearing or race, transferring pulling force from the slide hammer to the part. Proper collet selection and full expansion ensure a concentric grip that minimizes slippage and damage. The mechanism avoids external claws on delicate housings, making it ideal for blind-hole extractions.

• Eight expandable collet sizes covering 8–32 mm inner diameters
• Conical wedge action for radial expansion and firm hold
• Designed for concentric gripping to reduce component marring

What kinds of jobs and vehicles can this tool handle?

This extractor is suited for internal bearing and bushing removals in motorcycles, scooters, compact cars, ATVs and many light automotive or industrial assemblies. It performs best on recessed parts where external pullers cannot engage. For larger heavy-duty bearings, a bigger professional system may be preferable.

• Commonly used on motorcycle wheel bearings, hub inner races and small gearbox bearings
• Works with compact car and ATV internal bearings within the 8–32 mm range
• Useful for engine or transmission housings with blind bores

How do you set up and operate the slide hammer assembly?

Choose a collet that matches the internal diameter, insert it into the bearing bore and drive or pull the collet so the wedge expands. Attach the slide hammer to the collet fitting and deliver measured impacts to extract the part. The 360 mm (1.2 ft) slide hammer gives enough travel for controlled, repeatable pulls without excessive force.

• Select collet, insert, then engage expansion by pulling the assembly back
• Screw on the slide hammer and strike smoothly until the part dislodges
• Follow included instructions and use eye protection for safe operation

What materials and storage options are included with the kit?

The components are made from high-hardness carbon steel for wear resistance and long service life under repeated impacts. Each piece nests in a fitted plastic carrying case that keeps parts organized and protected when transported to job sites. The case helps prevent lost pieces and speeds tool selection during repairs.

• Hardened carbon steel construction for collets, fittings and slide hammer
• Compact molded plastic storage case for secure transport and organization
• Included instructions for first-time users and collet selection guidance

Who is this for: The MateAuto 12-piece internal bearing puller is aimed at motorcycle mechanics, hobbyist restorers, mobile technicians and home garage users who encounter recessed bearings and bushings. If you need a portable, reusable method to remove blind-hole internal parts between 8 and 32 mm without destructive cutting or welding, this kit provides a practical, mid-range solution. For frequent heavy industrial extractions beyond the specified size range, consider a larger commercial-grade system.