HUB INFORMATION
Part Number: 26431--3T
Hub Number: 2643
Description: Long Barrel Hub; 10 Stud Hub w/11.25 (285.75 MM) Dia. Bolt Circle. Uses Outboard Drum (M22 x 1.5) Serrated Stud
Hub Material: Cast
Mounting Type: FN
Drum Type: Outboard
Disc Wheel: Steel (Dual)
Wheel Stud: 101162
Stud Stand Out: 3.03
ABS Ring: Direct Machined ABS or 51294
Drum Options: 61577B, 61988B, 61991B, 66661B, 66864B, 66884B, 66800B, 66814B, 66854B, 66871B, 77864B
Drum Type: Outboard
Number of Studs: 10
Bolt Circle: 11.25
Stud Description: M22 x 1.5MM Serrated Stud
Outer Bearing Cup: 572
Outer Bearing Cone: 580
Inner Bearing Cup: 592A
Inner Bearing Cone: 598A or 594A
Webb Axle Group: 21
Cup Code: 1
Notes: OEM & AFM Part Number

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. Add (.25) to these dimensions when using brake drums having (.25) backplate thickness.
Drive Stud: P/N: 161834 (OEM # - 5/8-18); 161832 (AFM # - 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
61577B	7.00	0.50 Back Plate Thickness
61988B	8.62	0.50 Back Plate Thickness/For 19.5 Disc Wheel Approved for 19.5 disc wheels
61991B	8.62	0.50 Back Plate Thickness/For 19.5 Disc Wheel Approved for 19.5 disc wheels
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
66864B	7.00	0.50 Back Plate Thickness/Heavy Duty Drum
77864BW	7.00	0.50 Back Plate Thickness/Heavy Duty Drum
66871B	10.00	0.50 Back Plate Thickness
66884B	7.00	0.50 Back Plate Thickness/Extra Heavy Duty Drum
61577B	7.00	0.50 Back Plate Thickness
61988B	8.62	0.50 Back Plate Thickness/For 19.5 Disc Wheel Approved for 19.5 disc wheels
61991B	8.62	0.50 Back Plate Thickness/For 19.5 Disc Wheel Approved for 19.5 disc wheels
66661B	7.00	0.50 Back Plate Thickness/Extra Heavy Duty
66864B	7.00	0.50 Back Plate Thickness/Heavy Duty Drum
66884B	7.00	0.50 Back Plate Thickness/Extra Heavy Duty Drum
66800B	8.00	0.56 Back Plate Thickness
66814B	8.62	7 inch centerline
66854B	8.62	0.56 Back Plate Thickness
66871B	10.00	0.50 Back Plate Thickness
77864BW	7.00	0.50 Back Plate Thickness/Heavy Duty Drum

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FLANGE MOUNT (FN) INFORMATION
Disc Wheel: Steel
Tire Application: Dual
Total Disc Wheel Thickness: .75 to 1.00
Drum Type: Cast
Right Hand Stud: 101162
Stud Color: Black
Stud Standout: 3.03
Order Code: 3


Disc Wheel: 1 1/8 Alum.
Tire Application: Single
Total Disc Wheel Thickness: 1.12
Drum Type: Cast
Right Hand Stud: 101162
Stud Color: Black
Stud Standout: 3.03
Order Code: 3