TIANAOKEJI Internal Bearing Puller Slide-Hammer Kit 300mm — Double-Headed Expandable Collets (16–50mm) for Pilot Bearings

TIANAOKEJI Internal Bearing Puller Double Headed Bearing Puller is a slide‑hammer puller kit that removes internal bearings and sleeves by expanding collets inside the bore and using a 300mm slide hammer to extract them safely.

This alloy‑steel internal bearing puller is built to handle pilot bearings, bushings and other internally mounted components in motorcycles, cars and light machinery. The set includes two interchangeable expandable collet heads to cover small and large ranges, a slide hammer shaft with a comfortable handle, the hammer weight, fastening screw and an allen key. Designed to lock inside the inner ring, the tool converts the striking energy of the hammer into a straight pulling force to free stuck parts without needing access to the bearing's exterior.

How do I use the TIANAOKEJI internal puller safely and effectively?

Set the correct expandable collet for the bearing diameter, insert and tighten the screw so the collet grips the inner race, then slide the hammer to apply controlled impacts until the bearing releases. Keep the puller aligned with the component axis to avoid cocking or damaging the housing.

• Choose small collet for 16–35mm, large collet for 26–50mm bores.
• Hand‑tighten the screw and verify collet expansion before striking.
• Strike with steady, moderate force — avoid extreme blows.
• Wear eye protection and secure the workpiece in a vise if possible.

What sizes and parts will this double‑headed puller fit?

The kit covers a broad internal range by supplying two expandable collets: a small head suited for 16–35mm and a larger head for 26–50mm bore diameters. That overlap lets you handle a wide variety of pilot bearings, bearing sleeves and internal bushings commonly found in automotive and motorcycle assemblies.

• Small head working range: 16–35mm inner diameter.
• Large head working range: 26–50mm inner diameter.
• Slide hammer length: 300mm (1.2ft) for strong extraction force.
• Fits internal pull jobs where external jaws cannot reach.

What is included in the package and what materials are used?

The set combines durable alloy steel components with a practical accessory pack so you can start pulling immediately. Each part is machined to fit the collets and hammer shaft precisely, while the allen key and screw allow fast assembly and secure clamping of the expandable collet inside the bearing race.

• 1 x expandable collet assembly (two clamp heads included)
• 1 x slide hammer shaft with ergonomic handle
• 1 x slide hammer weight (300mm travel)
• 1 x fastening screw and 1 x allen wrench for assembly

Can this tool prevent damage to housings and bearing races?

When used correctly, the internal puller minimizes exterior contact with the housing because the collet grips the inner race directly, reducing the risk of distorting the outer bore. Proper selection of collet size, careful tightening and controlled hammer strikes are essential to protect surrounding surfaces and ensure a clean extraction.

• Inner ring engagement avoids external jaw pressure on the housing.
• Alloy steel construction provides strong, repeatable pulls.
• Controlled slide hammer impacts lower the chance of housing damage.
• Overlap in collet sizes helps achieve a secure internal grip.

Who is this for: The TIANAOKEJI Internal Bearing Puller Double Headed Bearing Puller is aimed at mechanics, motorcycle and automotive enthusiasts, roadside technicians and hobbyists who need a compact, durable tool for extracting internal bearings, pilot bearings and sleeves where external pullers cannot reach. It’s particularly useful in maintenance shops and home garages for jobs requiring internal extraction from 16mm up to 50mm bores.