Dozer Undercarriage Parts
Track Loader Idler Group CR3004 1069187 6S3277 6Y1189 for Caterpillar 931C 933C
Smaller track loaders like the 931C and 933C are often pushed hard in tight spaces—land clearing, landscaping, utility trenching, and farm work—where the idler group takes constant side loads, vibration, and debris packing. Our Idler Group is engineered to maintain precise track tension while absorbing the structural stress of heavy bucket loads and rapid direction changes. This is not just a replacement wheel; it is a reinforced assembly built to extend the service life of your entire track group.
| Specification | Details |
|---|---|
| OEM / Cross References | CR3004, 1069187, 6S3277, 6Y1189 |
| Compatible Models | Caterpillar 931C, 931C LGP, 933C, 933C LGP (and similar early 931/933 series variants) |
| Type | Front Idler Group (complete assembly with yoke, shaft & wheel) |
| Surface Hardness (Tread) | HRC 50–58 (case depth 7–10 mm) |
| Shaft Material | Forged/Casted & heat-treated high-strength steel |

What Sets This Idler Apart for 931C / 933C Users
Heavy-duty yoke & pivot shaft design — thicker walls and larger-diameter shaft than many aftermarket copies, reducing flex and premature bushing wear under repeated side thrust.
Induction-hardened running surface — HRC 50–58 with 7–10 mm case depth, so the tread stays round longer instead of developing flat spots in abrasive soil.
The Professional Edge: Why Source Our Idler Groups?
Ready-to-Install Assembly: Our idler group for 931/933 track loader comes as a complete group. No need to struggle with pressing in seals or shafts in the field—just bolt it into the tensioner and go.
Extreme Environment Seals: We use premium duo-cone seals that are tested to resist mud, sand, and water ingress, even in the "swamp" conditions often faced by LGP loaders.
Consistent Metallurgy: We don't mix scrap steel. Every idler is poured from a consistent alloy batch, ensuring uniform wear across your entire fleet.

FAQ
Does this fit both standard and LGP versions of the 931C/933C?
Yes — same idler group mounting and dimensions apply across the series.
Do you supply other undercarriage parts for the 933C?
Yes — track chains, bottom rollers, carrier rollers, sprockets, and track shoes are all available. We can quote a matched full set.
Address : Building 17, Block 9, Section D, 27th Road, Chenghui International Hardware and Electrical City, Xiamei Town, Nan'an City, Quanzhou, Fujian Province
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