Main Bearings - .030" Oversize - Set fits Allis Chalmers H3 I40 I600 D15 D12

Main Bearings, .030" Oversize Set for Allis Chalmers Tractors

This main bearing set is an aftermarket replacement engine component supplied in .030" oversize. Oversize main bearings are used when the crankshaft main journals have been ground undersize, allowing the bearing shells to restore proper clearance. The set is intended for the Allis Chalmers equipment applications listed below. Verify the required undersize and complete model before ordering.

Product Details

• Product Type: Main Bearings
• Size: .030" Oversize
• Quantity: Set

Fitment & Compatibility

• fits Allis Chalmers H3
• fits Allis Chalmers I40
• fits Allis Chalmers I600
• fits Allis Chalmers D15
• fits Allis Chalmers D12

Frequently Asked Questions

Q: What does .030" oversize mean for main bearings? A: It indicates the bearing shells are sized for a crankshaft whose main journals have been ground .030" undersize, restoring the correct running clearance.

Q: How do I confirm the correct bearing size? A: Check the crankshaft journal measurement or the machine shop's grind specification, then match it to the required oversize before purchase.

This is an aftermarket replacement part. Confirm fitment before purchase.