Komatsu Part BUSHING 21T-70-32170

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Product Overview

The 21T-70-32170 BUSHING is a genuine Komatsu OEM replacement bushing from the 21T prefix series. Bushings are replaceable wear components at pivot points — they provide the bearing surface between the hardened steel pin and the structural housing bore, accepting the surface wear that would otherwise damage these more expensive components.

Part Number: 21T-70-32170 Part Name: BUSHING Part Type: OEM Komatsu Replacement Bushing Availability: In stock

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When to Replace

• Rocking the joint reveals movement — clearance has grown beyond the Komatsu specification
• The bushing bore is oval or elongated from directional loading
• Surface cracks, galling, scoring, or embedded debris visible on the bore
• Grease leaks past the bushing face — the clearance gap has opened too wide
• The mating pin shows any visible wear ridge — pin and bushing should be replaced together

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Installation

1. Confirm 21T-70-32170 in your Komatsu parts catalog
2. Press out the old bushing using a driver with correct pilot — avoid scoring the housing
3. Clean the housing bore completely — old bushing fragments must be removed
4. Inspect the pin — replace if any wear is visible
5. Press the new bushing to correct depth — align grease holes if present
6. Lubricate before pin insertion and pump fresh grease after assembly

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Request a Quote

Need the Komatsu 21T-70-32170 BUSHING? Contact us through the form or by phone, email, or WhatsApp. We respond within one business day.