Sunex Tools Bearing Separator Splitter ½–9" — 57BS5 Alloy Steel, Threaded Holes, Zinc-Plated

The Sunex 57BS5 Bearing Separator is a forged alloy-steel splitter designed to extract bearings and gears from 1/2-inch to 9-inch diameters with sharp angled edges and threaded holes for push or pull attachments.

Built for professional mechanics and serious DIYers, the 57BS5 bearing separator gives a reliable, compact method to separate tightly fitted components without damaging housings or shafts. Forged from hardened alloy steel, each half has tapered, sharp edges that slide between assemblies, while threaded holes accept mechanical or hydraulic puller attachments for controlled removal. Zinc plating on the bodies and black oxide on the hardware resist corrosion, extending on-tool life in busy shops.

How does the 57BS5 get between tightly fitted parts?

The bearing separator uses two matched halves with acute, angled cutting edges that wedge into narrow gaps between a bearing and its housing. Once positioned, the halves clamp together to present a uniform pulling surface so force can be applied evenly without slipping.

• Sharp, angled edges designed to enter tight seams quickly.
• Precision-matched halves create a stable gripping surface.
• Works in shallow or confined spaces where prying might damage components.

What attachments and pullers work with this bearing splitter?

The 57BS5 includes threaded holes on each half so you can use it with two-leg mechanical pullers, hydraulic pullers or sliding-beam setups. Threaded ports let you attach push bolts or yokes to convert the separator into a controlled pulling assembly for consistent, centered extraction.

• Compatible with two-leg mechanical and hydraulic pullers.
• Threaded holes accept standard pushing bolts and pulling adapters.
• Allows balanced force application to protect shafts and housings.

How durable and corrosion-resistant is this tool?

Manufactured from drop-forged hardened alloy steel, the splitter halves are built for repeated shop use and high load conditions. Zinc plating on the bodies and black oxide coating on the screws reduce rust formation, which helps preserve fit and function over time.

• Drop-forged, heat-treated alloy steel for strength and longevity.
• Zinc-plated surfaces resist oxidation in workshop environments.
• Black oxide hardware minimizes corrosion and maintains thread integrity.

What size range and applications can I expect?

This model covers bearing and gear diameters from 1/2" up to 9", making it suitable for a wide range of automotive, agricultural, and industrial repairs. Its compact design lets technicians access components in cramped engine bays, gearboxes, wheel hubs, and small machinery.

• Covers 0.5" to 9" diameters for bearings and gears.
• Useful in automotive, heavy equipment, and light industrial maintenance.
• Works well with hydraulic or manual pulling systems for varied tasks.

Who is this for? The Sunex 57BS5 is aimed at professional mechanics, fleet technicians, and dedicated home mechanics who need a reliable, corrosion-resistant bearing separator that performs in tight spaces. If you do regular bearing or gear work and value rugged construction, threaded versatility for multiple pulling systems, and clean removal without housing damage, this tool is a practical addition to your puller kit.