7,000 lb Build-Your-Own Trailer Axle Kit
8-Lug Idler Hubs · #42 Square Weld-On Spindles
Part Number: BYOAK-42-H865-SQ
This listing is for a 7,000 lb build-your-own trailer axle kit, designed for fabricators and trailer builders who need a complete idler axle setup using 8-lug hubs and #42 square weld-on spindles.
This kit provides all hub, bearing, seal, and spindle components required to fabricate a straight axle. The only item not included is the axle tube.
What’s Included
- (2) #42 square weld-on spindles — SP-50642-SQ
- (2) 8-lug idler hubs — 8 on 6.5" bolt pattern (008-231-09)
- (2) 7,000 lb bearing kits with dust caps — HD-7000-KIT
- (2) Round spindle washers — SW1000
- (2) Castle nuts — 006-001-00
- (2) Cotter pins — 165649
Each 7,000 lb Bearing Kit Includes (Qty 2 Kits)
- (1) Dust cap — 2.71" OD (021-043-02)
- (1) Inner bearing — 25580 (1.75" ID)
- (1) Outer bearing — 14125A (1.25" ID)
- (1) Grease seal — 10-10 (2.125" ID)
- (1) Grease seal — 10-36 (2.25" ID)
Specifications
| Specification | Detail |
|---|---|
| Axle Capacity | 7,000 lb |
| Bolt Pattern | 8 on 6.5" |
| Hub Type | Idler |
| Spindle Type | #42 square weld-on |
| Grease Type | Standard (non-EZ-Lube) |
Spindle Details (Square #50642)
- Overall length: 11"
- Weld-on base: 2" square solid shaft
- Top journal diameter: 1"
- Shaft length: 5.93"
Not Included
- Axle tube (typically 3" or 4" square tubing depending on application)
- Brake components
- Wheels or tires
This kit is intended for fabrication use. Welding, alignment, and final installation should be performed by a qualified technician. Always verify dimensions and load ratings before installation.