MANNIFEN 10" 3-Jaw Gear Puller – Convertible Carbon Steel, Reversible Arms & Black Oxide Screw

The MANNIFEN 10-inch 3 Jaw Gear Puller is a convertible, heavy‑duty tool that removes gears, bearings, pulleys and similar press‑fit parts safely and evenly.

This compact 10" puller combines a three‑jaw design with reversible arms and a central threaded screw to deliver controlled, even extraction. Constructed from carbon steel with a black oxide coated center screw, it handles internal and external pulls and converts to a two‑jaw configuration for tight or awkward spaces. The puller’s adjustability and durable finish make it a versatile addition to a mechanic’s or hobbyist’s toolbox.

How does the three‑jaw design protect parts during removal?

The three jaws distribute force evenly around the circumference of the part, reducing the risk of bending or warping compared with single‑point pulling methods. Each jaw is adjustable to match different diameters and grip profiles, so the pull engages securely without slipping.

• Even 360° force distribution minimizes damage to shafts and housings.
• Adjustable jaw span fits a broad range of pulley and bearing sizes.
• Reversible jaw orientation lets you choose the best grip for the job.

When should I convert the tool to a two‑jaw puller?

Switch to two jaws when access is limited or when a part requires a narrower approach angle. Converting is a quick mechanical reconfiguration that lets the puller reach components inside compact assemblies where three jaws cannot seat properly.

• Ideal for confined spaces where full 3‑jaw clearance isn’t available.
• Two‑jaw setup can better reach asymmetrical or offset parts.
• Simple conversion by repositioning the arms without extra parts.

Can this puller handle both internal and external pulls?

Yes — the jaws are reversible to perform both internal pulls (expanding behind a bearing or race) and external pulls (gripping the outside of a gear or pulley). Flipping and remounting the arms lets you change between modes quickly without additional tools.

• External mode grips the part’s outside edge for direct extraction.
• Internal mode expands behind a bore to push the component off its seat.
• Reversible arms eliminate the need for separate internal/external pullers.

What materials and finishes improve durability and service life?

All structural components are made from premium carbon steel for high tensile strength and resistance to deformation under load. The central screw features a black oxide coating to help resist corrosion and maintain smooth operation through repeated use.

• Carbon steel jaws and arms for lasting strength under torque.
• Black oxide‑coated screw reduces rust and binds less over time.
• Robust construction stands up to workshop and field conditions.

Who is this for: The MANNIFEN 10" 3 Jaw Gear Puller is designed for professional mechanics, maintenance technicians, engineers and serious DIYers who need a reliable, adaptable puller for regular use. If you work on engines, transmissions, electric motors, pumps or general machinery and want a single, convertible tool that handles internal and external extractions while fitting into tighter spaces, this puller is a practical choice to add to your kit.