Circlip Pliers Knipex 44 11 J4, external/internal, Cr-V steel, 320 mm

Knipex 44 11 J4 circlip pliers are precision hand tools designed for fitting and removing both internal and external circlips in mechanical assemblies. Constructed from forged chrome‑vanadium steel with oil hardening, these pliers measure 320 mm and weigh 469 g. The tool features non‑slip solid tips and plastic handles for improved handling, and is rated for circlip diameters from 8 mm to 140 mm. The solid forged style and durable materials make this pliers suitable for repeated use in workshop, automotive and industrial maintenance environments.

Advantages

The pliers offer a robust forged chrome‑vanadium body and hardened tips that provide secure gripping and resistance to wear. The non‑slip plastic handles improve user control during installation and removal of circlips. With a wide application range of 8–140 mm and dual capability for internal and external circlips, this single tool reduces the need for multiple specialized pliers. The oil‑hardened finish increases longevity under frequent mechanical use.

Suitable for (tasks / use cases)

• Installation and removal of internal circlips in bores
• Installation and removal of external circlips on shafts
• Automotive repair and suspension maintenance
• Industrial machinery assembly and maintenance
• General mechanical and maintenance workshops

Key specifications

• Overall length: 320 mm
• Weight: 469 g
• Material: forged chrome‑vanadium steel, oil‑hardened
• Handle type: non‑slip plastic handles
• Tip style: solid, non‑slip tips suitable for secure gripping
• Circlip application range: 8–140 mm diameter
• Function: suitable for both internal and external circlips

How to use

Select the correct orientation for internal or external circlips and position the tips into the circlip eyelets. Apply steady hand pressure to compress or expand the circlip as required, keeping the pliers tips aligned with the circlip to avoid slipping. For internal circlips, compress evenly and guide the circlip into the bore; for external circlips, expand gently and place onto the shaft groove. Release pressure slowly to ensure the circlip seats correctly. Inspect the circlip and seating area after installation to confirm secure placement.

Usage recommendations

Use eye protection when working with circlips to protect against sudden release. Keep the tips clean and free of burrs; replace the tool if tips become damaged or worn. Store in a dry place and apply light lubrication to the hinge periodically to maintain smooth operation.