Description
Overview:
The Big End Shells U/S 030 (Pairs) for the Jap Model 5 industrial engine are genuine replacement bearing shells designed to restore correct big-end clearances on reground crankpins. Supplied as a matched pair, they fit the connecting rod big-end on the JAP 5 engine and support the crankshaft journal with an oil film to reduce friction and wear. Manufactured from durable bearing-grade metal with an anti-friction lining, they provide stable performance under continuous industrial use. This set is undersize 0.030 in (0.76 mm), intended for crankshafts ground to that specification. OEM number 18473/030. As unused old stock, minor surface tarnish may be present, but it does not affect function. Suitable for JAP 5 engines used across general industrial and site machinery.
Key Features:
- Genuine Jap part for assured fit and performance
- OEM reference: 18473/030
- Undersize 0.030 in (0.76 mm) for reground crankshafts
- Supplied as a matched pair to complete one connecting rod big-end
- Precision bearing surfaces help maintain stable oil film and correct clearances
- Direct replacement for JAP 5 with no modifications when the journal is correctly ground
- Robust bearing material for durability under sustained load and temperature
- Helps cure big-end knock, restore oil pressure, and reduce wear
- Suitable for routine servicing and full engine overhauls
- Unused old stock; any tarnishing is cosmetic only
Typical Applications:
Used during engine rebuilds or maintenance on JAP 5 industrial engines to replace worn big-end bearings after crankshaft regrind. Common on equipment powered by JAP 5 units in construction, agriculture, and general industrial settings, including site machinery such as generators, pumps, mixers, compressors, and compactors where reliable, low-friction crank support is required.
Also known as:
Big-end bearing shells, connecting rod bearings, con-rod shells, crankpin bearings, rod bearing inserts, engine bearing shells, 0.030" undersize bearings (0.76 mm), big end inserts.
Fits Models:
JAP 5, JAP5
Product Specifications
| L&S Part No. | 18473/030 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Jap |
| OEM No. | 18473/030 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Key Features | - Genuine replacement for JAP Model 5 industrial engine - Undersize 0.030 in (0.76 mm) for reground crankshafts - Supplied as a matched pair for one connecting rod - Durable bearing-grade metal with anti-friction lining - OEM reference number 18473/030 for assured compatibility |
| Fits Models | JAP 5 |
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