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JEGS Main Bearings


JEGS Performance Products
JEGS Main Bearings

Traditional bearings have three layers: steel, copper-lead, and thin babbitt overlay (only 0.0005" to 0.0008"). JEGS Main Bearings in a Performance or High-Performance series have two layers: high-strength steel and bonded silicon, tin, and copper in an aluminum matrix (0.015" thick). Because an alloy, properties are maintained through its entire depth to deliver consistent, reliable output. Additionally, micro-fine machined High-Performance Bearings have chamfered oil holes and offer a copper-lead version for Chevy Gen III/IV LS Engines only. Bearings are sold in sets for Chevy and Ford applications.

High Load Capacity
Aluminum silicon bearings withstand the stress of high-performance engines. JEGS Bearings are made from the same metallurgical alloy so cars that have standard bearings benefit from this alloy used in race engines.

Temperature Resistance
This alloy's melting/fatigue point is 450°+ F (100° more than the thin babbitt overlay of tri-metal bearings). This means extra protection against localized overheating due to misalignment, detonation, overloading, loss of coolant, etc.

Particle Embedability
More than half of engine bearing failure is caused by metallic particles that scratch crank journals and weaken or tear thin bearing overlays. Because aluminum silicon overlay is much thicker than babbitt in tri-metal bearings (0.015" vs. 0.0008"), it provides 18 times more embedability to trap particles to prevent crank journal scratches. This is especially true for particles over 0.0004", which cause most of the damage.

Conformability
The thicker aluminum silicon layer allows bearings to better conform to problems, such as metal-to-metal contact due to misalignment. Greater conformability also means fewer bearing failures.

Control of Wall Tolerance
Bearing-to-journal clearance is affected by several factors. We've alleviated concerns about inconsistent shell-to-shell bearing wall thickness by using statistical control methods to minimize wall thickness variation. JEGS Engine Bearing thickness varies no more than 0.00010". Other manufacturers produce bearings with wall thickness at the crown that varies as much as 0.00025".


31 Products Page: 1 2 ... |  Next Results per Page:
Small Block Chevy LS Gen III/IV
  • Performance Series

  • 555-25070
    Performance Main Bearing Set
  • Small Block Chevy LS Gen III/IV
  • Standard Size
  • $58.99
    Ships

    555-25072
    Performance Main Bearing Set
  • Small Block Chevy LS Gen III/IV
  • +0.010"
  • $58.99
    Ships
    Small Block Chevy LS Gen III/IV
  • High-Performance Series
  • Copper-Lead Material

  • 555-25075
    High-Performance Main Bearing Set
  • Small Block Chevy LS Gen III/IV
  • Standard Size
  • $109.99
    Ships
    Small Block Chevy (Large Journal)
  • Performance Series

  • 555-25010
    Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • Standard Size
  • $18.99
    Ships

    555-25011
    Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.001"
  • $27.99
    Ships

    555-25012
    Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.010"
  • $18.99
    Ships

    555-25013
    Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.020"
  • $18.99
    Ships

    555-25014
    Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.030"
  • $18.99
    Ships
    Small Block Chevy (Large Journal)
  • High-Performance Series

  • 555-25015
    High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • Standard Size
  • $60.99
    Order Today Ships 09/25/14

    555-25016
    High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.001"
  • $60.99
    Ships

    555-25017
    High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.010"
  • $60.99
    Ships

    555-25018
    High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.020"
  • $60.99
    Ships

    555-25019
    High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.030"
  • $60.99
    Ships
    Small Block Chevy 400
  • High-Performance Series

  • 555-25020
    High-Performance Main Bearing Set
  • Small Block Chevy 400
  • Standard Size
  • $60.99
    Ships

    555-25022
    High-Performance Main Bearing Set
  • Small Block Chevy 400
  • +.010"
  • $60.99
    Ships

    555-25023
    High-Performance Main Bearing Set
  • Small Block Chevy 400
  • +.020"
  • $60.99
    Ships
    Big Block Chevy
  • Performance Series

  • 555-25040
    Performance Main Bearing Set
  • Big Block Chevy
  • Standard Size
  • $34.99
    Ships

    555-25041
    Performance Main Bearing Set
  • Big Block Chevy
  • +.001"
  • $34.99
    Ships

    555-25042
    Performance Main Bearing Set
  • Big Block Chevy
  • +.010"
  • $34.99
    Ships

    555-25043
    Performance Main Bearing Set
  • Big Block Chevy
  • +.020"
  • $34.99
    Ships

    555-25044
    Performance Main Bearing Set
  • Big Block Chevy
  • +.030"
  • $34.99
    Ships
    Big Block Chevy
  • High-Performance Series

  • 555-25045
    High-Performance Main Bearing Set
  • Big Block Chevy
  • Standard Size
  • $58.99
    Order Today Ships 09/11/14

    555-25046
    High-Performance Main Bearing Set
  • Big Block Chevy
  • +.001"
  • $58.99
    Ships

    555-25047
    High-Performance Main Bearing Set
  • Big Block Chevy
  • +.010"
  • $58.99
    Ships

    555-25048
    High-Performance Main Bearing Set
  • Big Block Chevy
  • +.020"
  • $58.99
    Order Today Ships 09/25/14
    Small Block Ford
  • Performance Series

  • 555-25050
    Performance Main Bearing Set
  • Small Block Ford
  • Standard Size
  • $23.99
    Ships

    555-25051
    Performance Main Bearing Set
  • Small Block Ford
  • +.001"
  • $23.99
    Ships

    555-25052
    Performance Main Bearing Set
  • Small Block Ford
  • +.010"
  • $23.99
    Ships

    555-25053
    Performance Main Bearing Set
  • Small Block Ford
  • +.020"
  • $23.99
    Ships
    Small Block Ford
  • High-Performance Series

  • 555-25055
    High-Performance Main Bearing Set
  • Small Block Ford
  • Standard Size
  • $55.99
    Ships

    31 Products Page: 1 2 ... |  Next Results per Page: