ACL Race Series HX Main Bearings for Nissan Skyline RB/RD - 7M2394HX-STD

Series: ACL Race Series HX

Bearing Type: Main bearing set

Oil Clearance: 0.001 inch (0.025 mm) additional clearance

Construction: High-performance tri-metal bearing material

Operating Conditions: Designed for sustained high-RPM engine use

Overlay: High-strength, reduced-thickness overlay for improved fatigue resistance

Steel Backs: Hardened for reliable support and bearing retention

Bearing Crush: Increased crush for improved housing fitment

Surface Finish: No flash plating for improved heat transfer and housing grip

Eccentricity: Optimized for bore distortion and stable hydrodynamic oil-film formation

Oil Groove: 3/4-grooved main bearings for balanced oil flow and load capacity

Wall Tolerance: Precision-controlled for accurate and consistent clearances

Chamfers: Enlarged inside-diameter chamfers for performance crankshaft compatibility

Part Number: 7M2394HX-STD

Brand: ACL

Product Series: Race Series HX

Size: Standard

Clearance Type: HX extra-clearance specification

Additional Clearance: 0.001 inch / 0.025 mm

Tunnel Diameter: 58.645–58.658 mm

Shaft Diameter: 54.951–54.975 mm

Maximum Wall Thickness: 1.814 mm

Maximum Length: 19.12 mm

Bearing Halves: Upper and lower

Journal Requirement: Standard-size journals

Weight: 0.41 kg

ACL Bearings is an Australian manufacturer known for producing precision engine bearings for original-equipment, replacement and high-performance applications. The company has manufactured bearings in Launceston, Tasmania since 1949, developing extensive experience in metallurgy, machining and engine bearing design. ACL’s motorsports involvement dates back to the 1960s, including bearings produced for Brabham Formula 1 engines, and its products have since been used in drag racing, drifting, rally, speedway and touring-car competition. Today, the ACL Race Series is its best-known performance line, offering main bearings, connecting rod bearings, thrust washers and related engine components for a wide range of Japanese, American, European, Australian and Korean engines. This combination of manufacturing history and racing experience has made ACL a trusted choice for professional engine builders and performance enthusiasts.

For Nissan Skyline GT-R and Nissan GT-R applications, ACL offers performance bearing solutions for the RB26DETT used in the R32, R33 and R34 Skyline GT-R, along with the VR38DETT found in the R35 GT-R. ACL Race Series bearings are designed to support stable oil control, accurate bearing clearances and dependable crankshaft operation under the higher cylinder pressures, engine speeds and temperatures produced by modified turbocharged engines. Depending on the application, available features may include tri-metal construction, strengthened overlays, hardened steel backs, optimized oil grooves and tightly controlled wall thicknesses. Select standard-size, undersize and additional-clearance options also give engine builders greater flexibility when setting up an RB26 or VR38 for street, competition or high-horsepower use.

ACL products are covered by the manufacturer’s applicable warranty. All warranty claims are reviewed individually and are subject to inspection and approval by ACL.

To begin a claim, please contact Elite GT-R Parts with:

• Your order number and ACL part number
  
• A description of the problem
  
• Clear photos of the product and affected components
  
• Any requested installation or engine-build information
  

Please do not return or ship the product until return instructions have been provided. Additional documentation or inspection may be required before ACL can make a decision. Final warranty eligibility and the available resolution are determined by ACL according to its current warranty terms.