ACL Engine Bearings

For over 70 years precision engine bearings have been manufactured in Launceston, Tasmania, Australia.

During this time ACL has been a major OEM supplier to the Australian & International automotive industry, whilst providing an extensive replacement product range for the global aftermarket.

The company has a high degree of vertical integration encompassing: tooling & product design, bearing strip manufacture, tooling & machine manufacture as well as the complex manufacturing processes & systems required to produce the final product. ACL’s Business Management Systems hold the internationally recognized ISO9001: 2015 Quality Management System, ISO14001: 2015 Environmental Management System & ISO451001: 2018 Occupational Health & Safety Management System certification.

Today ACL produces one of the largest aftermarket range of engine bearings and has a global reputation for robust metallurgy, quality, precision, innovation and performance.

ACL has a long and rich history in motorsport – it is in our DNA. The ACL RACE Series Performance Engine Bearings of today has a strong pedigree in motor racing that traces its roots back to the 1960’s with the manufacture of engine bearings for use in the world conquering Brabham Formula 1.

Further experience in the Australian Supercars Championship, drag racing, speedway, drifting & rally with its range of RACE Series Performance Engine Bearings being the first choice for discerning engine builders the world over.

The ACL RACE Series Performance Engine Bearing offering covers over 200 varied engine applications covering a wide range of performance engine bearings for Australian, American, Japanese, Korean & European applications. The range continues to expand to cover new engine releases.

If you place demands on your engine … demand the best.

ACL Australia

If you place demands on your engine… demand the best!

ACL has a proud & rich history in Motorsport – it is in our DNA. There is no better proving ground than the racetrack whatever it’s configuration. In the heat of competition proven technology always comes through.

The ACL RACE Series performance engine bearing range of today has a strong pedigree in motorsport & traces its roots back to the 1960’s with the manufacture of engine bearings for use in the world conquering Brabham Formula 1. Further experience in the Australian Supercars Championship & numerous other race codes has culminated in the current ACL RACE Series technology platform. The unique combination of design, metallurgy, engineering & precision quality control come together to deliver what engine builders expect from performance engine bearings

Whatever your application we have you covered – if you are looking for the best – demand the best.

FEATURES OF ACL RACE SERIES PERFORMANCE ENGINE BEARINGS
Precision Manufacturing
ACL Race Series performance engine bearings are manufactured to exacting tolerances. Micron tolerance machining supported by precision measurement systems delivers consistent accuracy to key characteristics like wall thickness and crush. This ensures reliable fit and helps maintain consistent clearances.
Precision Manufacturing
Bearing Material Enhancements

A blend of characteristics to provide high strength and crankshafts. excellent seizure resistance.

No flash plating is applied to further improve bearing retention and maximise heat transfer.

ACL Race Series performance engine bearings are identified from the standard range by the following suffixes:

H = ACL Race Series

HX = ACL Race Series with 0.025mm (0.001”) extra clearance

HD = ACL Race Series with location dowel holes.*

HXD = ACL Race Series with 0.025mm (0.001”) extra clearance and location dowel holes.*

*Connecting rod bearing applications only

Precision Manufacturing
Bearing Design Enhancements

Crush increased for:

Improved bearing retention from higher radial contact pressure. Locks the bearing into the housing.

More effective heat dissipation through improved thermal transfer.

Bearing Eccentricity

Definition: Gradual reduction in wall thickness between the crown and parting line.

ACL Race Series performance engine bearings feature increased eccentricity to increase improve shape adaptation to compensate for bore distortion at high speed operation.

Assists in the formation of hydrodynamic oil film.

Main Bearings with Extended Grooves

Full (180o) grooved uppers with matching partial groove in lowers.

  • Reduces interruption to big end oil supply.

Tapered groove run-out.

  • Smooths big end supply cut-off avoiding pressure pulsing and cavitation.

Enlarged ID Chamfers

Accommodate larger fillet radii on performance crankshafts.

Precision Manufacturing
Comparison of ACL Materials
Comparison of ACL Materials