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Knipex 44 21 J21 SBA internal retaining ring pliers black plastic-dipped handles 90 degree tip

Knipex

Knipex 44 21 J21 SBA Retaining Ring Plier Internal 0.070 Tip 90 Deg

SKU CH-NM9Z-K5BSM

Internal retaining-ring pliers with 90-degree 0.070-inch tips, chrome-vanadium steel, DIN 5254 B

  • TypePliers
  • MaterialChrome Vanadium Electric Steel
  • Color/FinishBlack
  • Internal bore range 3/4 in to 2-3/8 in
  • Fixed 0.078 in tip diameter for secure grip
  • 90-degree angled tips reach confined spaces
  • Chrome vanadium electric steel resists wear
  • DIN 5254 B standard ensures quality

Knipex Internal Retaining Ring Pliers 90°

These Knipex pliers are built for removing and installing internal retaining rings. The 90-degree angled tips reach into bores from 3/4 in to 2-3/8 in. Forged from chrome vanadium electric steel, they meet DIN 5254 B standards for professional use.

Mechanics needing 90-degree internal ring access

Technicians working on transmissions, hydraulic cylinders or gearboxes will value the fixed .078 in tips and 6 3/4 in overall length. The plastic-dipped handles provide grip without a spring return mechanism. This tool does not suit external ring jobs or straight-tip requirements.

Fixed .078 in tip diameter at 90 degrees

The tip diameter of .078 in and 90-degree angle determine which internal retaining rings fit. Verify the ring groove dimensions match these specifications before purchase. The black finish resists corrosion in workshop environments.

Highlights

  • Internal bore range 3/4 in to 2-3/8 in
  • Fixed 0.078 in tip diameter for secure grip
  • 90-degree angled tips reach confined spaces
  • Chrome vanadium electric steel resists wear
  • DIN 5254 B standard ensures quality

Specifications

BrandKnipex
Model44 21 J21 SBA
TypePliers
MaterialChrome Vanadium Electric Steel
Color/FinishBlack

Questions about this item

Will the 0.070-inch tips on the 44 21 J21 SBA wear down and need replacement?

The fixed tips are machined from Chrome Vanadium Electric Steel and are not designed to be replaced; they should be inspected for deformation after heavy use.

What is the first limit reached when using these pliers continuously on internal rings at the 2-3/8 inch bore maximum?

The 0.078-inch tip diameter and 90-degree angle define the maximum bore capacity; exceeding this risks tip distortion or ring damage.

How much heat builds up in the plastic-dipped handles during all-day repetitive use?

The handles are plastic-dipped for grip and insulation; they do not generate heat themselves, though user friction may warm them slightly.

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