NTN Needle Roller Cage - 17X24X20

NTN offers this swingarm bearing kit. The swingarm pivots on needle bearings protected by seals. Water and mud make them seize: the suspension gets stiff and play appears.

What is this bearing made of?

Races and balls in hardened chrome steel, 100Cr6 type, very hard and fatigue-resistant, protected by rubber seals.

• Double seal (2RS): a seal on each side, very well sealed against water and mud, essential off-road.
• Limit: slightly more drag than a metal-shielded bearing (ZZ), which spins more freely but seals far less well.
• Fitting: press or drift it in on the outer race, never hammer on the seal; keep the pressure washer away from the hubs.

Why choose NTN?

NTN, the Japanese bearing maker founded in 1918, is the brand chosen by engine specialists such as ProX for their crankshaft bearing kits.

When should you replace this part?

Side play when you rock the swingarm with the rear wheel removed, or a notchy movement: the bearings need changing.

Specifications and fitting tips

• Manufacturer part number: HMK1720C

Cross-Mania tip: Press out the old bearings, grease the new ones and check the swingarm pivot: if it is marked, replace it too.

Also needed with this part

• Grease : SHOWA 500 g · KYB

Compatibility

Universal part: check the dimensions given before ordering.