HUB INFORMATION
Part Number: 27231--7T-71
Hub Number: 2723
Description: 10 Stud Hub w/11.25 (285.75MM) Dia. Bolt Circle. Uses Outboard Drum (M22 x 1.5) Serrated Stud
Hub Material: Cast
Mounting Type: FN
Drum Type: Outboard
Disc Wheel: Aluminum (Dual)
Wheel Stud: 101161
Stud Stand Out: 2.73
ABS Ring: 51056
Drum Options: 66661B, 66800B, 66814B, 66854B, 66871B, 66665B
Drum Type: Outboard
Number of Studs: 10
Bolt Circle: 11.25
Stud Description: M22 x 1.5MM Serrated Stud
Outer Bearing Cup: 742
Outer Bearing Cone: 749
Inner Bearing Cup: 772
Inner Bearing Cone: 782
Webb Axle Group: 24
Cup Code: 1
Notes: OEM Part Number
AFM P/N 27231--0T-71. No studs installed
Stud Standout (Cast drums): Dimensions shown are for brake drums having (.50) back plate thickness. Deduct (.06) from these dimensions when using brake drums having (.56) back plate thickness.
Drive Stud: P/N: 161834 (5/8"-18). This hub designed for dual wheel mounting or single wheels with 1/2" maximum offset.

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AXLE MANUFACTURER

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AXLE MANUFACTURER
ArvinMeritor (Rockwell)
(Long Drive “R” Series) RC-22-145, RS-21-145, RS-21-160, RS-21-230, RS-23-160, RS-23-161, RS-23-180, RS-23-240, RS-23-380, RS-24-160,RS-24-161, RS-26-160, RS-26-161, RS-26-180, RS-26-380, RT-40-145, RT-44-145, RT-46-160, RT-48-180, RT-48-380, RT-52-160, RT-52-180, RT-52-380, SQ100, SQR100, SSHD, (Tag Axles TR, TRD, TT)

Dana Spicer (Eaton)
18, 23, 26, 38D, 44D, D380, D381, D400, (Tag Axles 25LD, H25LD)

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DRUM OPTIONS
Click on Drum Part Numbers for More Drum Information

Drum/Rotor Number	Brake Size	Notes
66661B	7.00	0.50 Back Plate Thickness Extra Heavy Duty Drum
66665B	7.00	0.50 Back Plate Thickness
66800B	8.00	0.56 Back Plate Thickness
66854B	8.62	0.56 Back Plate Thickness Oil Groove
66871B	10.00	0.50 Back Plate Thickness

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FLANGE MOUNT (FN) INFORMATION