P/M Steel Straight Sleeve Bearing for D7R D8R D8T Track-Type Tractor
This oil infused powdered metal bearing is built for the kind of work that wears out standard parts fast. Used in D7R, D8R, D8T and D8N track-type tractors as well as 572R pipelayers, it holds up under the continuous load and vibration that heavy dozer work puts on a machine's undercarriage. The straight sleeve design with no grease hole keeps things simple — no extra maintenance steps, just a solid fit and consistent dimensional support across a range of track-type tractor bearing replacement applications.
At a glance: P/M steel, oil infused straight sleeve bearing — 3.17 in ID × 3.55 in OD × 2.16 in length. No grease hole. Fits selected D-series tractors and 572R pipelayers.
What This Bearing Is For
Powdered metal bearings earn their place in heavy equipment because they self-lubricate under load and maintain tight tolerances even after extended use. This particular bearing is stocked for repair shops and parts distributors working on Caterpillar D-series machines — the kind of equipment that runs hard in mining, pipeline construction and land clearing.
If you are sourcing a sleeve bearing for dozer undercarriage rebuild, the straight bore design here is a common fit for pivot and support positions that do not require a lubrication port. Cross-reference your old part number or measure the bore before ordering — dimensions vary between machine series and production years.
Technical Specifications
| Product Name | P/M Steel Straight Sleeve Bearing |
|---|---|
| Material | P/M steels (powdered metal) |
| Type | Straight sleeve, no grease hole |
| Inside Diameter | 3.17 in |
| Outside Diameter | 3.55 in |
| Overall Length | 2.16 in |
| Lubrication | Oil infused (self-lubricating) |
| Condition | New aftermarket replacement |
Compatible Equipment
Referenced for the following machine types. Always verify by part number or measured dimensions before ordering.
Track-Type Tractor
Pipelayer
Water Fording Tractor
Who Typically Orders This Part
Common Buyers
Construction machinery repair workshops
Heavy equipment parts distributors
Fleet maintenance teams
Undercarriage rebuild service providers
Mining and pipeline contractors
To Get a Correct Quote
Machine model and production series
Original part number if on hand
Bore ID, OD and length measurement
Photo of the old bearing
Required quantity and shipping destination
Frequently Asked Questions
What does oil infused mean for this bearing?
The porous powdered metal structure holds lubricating oil within the material itself. Under load and heat, the oil releases gradually to the bearing surface — reducing friction without needing an external grease point.
What are the dimensions of this sleeve bearing?
3.17 inch inside diameter, 3.55 inch outside diameter, 2.16 inch overall length. Measure your existing bearing before ordering to confirm the fit.
Does it have a grease hole?
No — this is a plain straight sleeve with no grease port. If your application requires a lubrication hole, this bearing is not the right match.
Which machines does it fit?
It is referenced for D7R, D8R, D8T and D8N tractors, 572R pipelayers and the D7R II water fording variant. Confirm by part number or dimensions before purchase.
How do I confirm the right part before ordering?
Send the machine model, your old part number, a photo of the worn bearing and the measured dimensions. The Shunqi team will cross-reference and confirm before shipment.
Request a Quote
Shunqi supplies aftermarket parts for crawler tractors, pipelayers, excavators and crawler cranes — with export packaging and fitment support for global buyers. Share your model, quantity and destination for a direct factory quotation.
Trademark notice: Caterpillar, Cat and related model designations are referenced solely to indicate equipment compatibility. This is an aftermarket replacement part supplied by Quanzhou Shunqi Machinery Parts Co., Ltd. — not an OEM product.
Get a Direct Quote on This Bearing
Dimension check · Aftermarket fitment support · Worldwide shipping
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