7,000 lb Build Your Own Idler Axle Kit with 8-Lug Idler Hubs and #42 Round Spindles
Part Number: BYOAK-42-H865-RD
This Build Your Own Axle Kit is intended for 7,000 lb trailer axle applications using an idler (non-brake) configuration. It includes standard round #42 spindles, 8-lug idler hubs, bearing kits, and all required spindle mounting hardware.
Axle tube is not included. This kit is commonly used for custom axle fabrication, rear idler axles on tandem trailers, or idler axle replacement where brakes are not required.
Features
- Designed for 7,000 lb trailer axle class components
- Idler axle configuration (no brakes)
- 8 on 6.5" bolt pattern idler hubs
- #42 round, non-flanged spindles
- Includes bearings, seals, dust caps, and spindle hardware
- Suitable for custom axle builds or idler axle replacement
What’s Included
Spindles & Hardware- (2) Round #42 spindles — SP-22542
- (2) Spindle washers — SW1000
- (2) Spindle castle nuts — FA-SN100
- (2) Cotter pins — 165649
- (2) Idler hubs — 82865-1
- 8 on 6.5" bolt pattern
- 1/2" wheel studs
- (16) Lug nuts — X1023R (1/2"-20, 60° cone)
- (2) Hub bearing kits — HD-7000-KIT
Each HD-7000-KIT includes:
- (1) Dust cap — 2.71" OD
- (1) Outer bearing — 14125A (1.25" ID)
- (1) Inner bearing — 25580 (1.75" ID)
- (1) Grease seal — 10-36 (2.25" ID)
Kit Specifications
| Specification | Detail |
|---|---|
| Axle Class | 7,000 lb |
| Hub Type | Idler (No Brakes) |
| Bolt Pattern | 8 on 6.5" |
| Spindle Style | Round #42 |
| Spindle Base Diameter | 2.25" |
| Axle Tube Included | No |
Spindle Engineering Diagram
Dimensional Specifications
| Specification | Detail |
|---|---|
| Overall Length | 11.00 ± .05 in (279.4 ± 1.3 mm) |
| Shoulder to Threaded End | 4.290 in (108.97 mm) |
| Length to Thread Start | 4.030 – 4.130 in (102.36 – 104.90 mm) |
| Shoulder Length | 2.410 in (61.21 mm) |
| Intermediate Length | 1.635 in (41.53 mm) |
| Small Step Length | .635 in (16.13 mm) |
| Major Body Diameter | Ø 2.500 +.000 / -.003 in |
| Inner Shoulder Diameter | Ø 2.250 in (57.15 mm) |
| Main Shaft Diameter | Ø 1.749 in (44.42 mm) |
| Tapered Section Diameter | Ø 1.249 in (31.72 mm) |
| Thread Specification | 1"-14 UNS 2A |
| Cross Hole Diameter | Ø .187 ± .010 in (4.75 ± 0.25 mm) |
| Runout Tolerance | ⌀ .002 in |
| Face Tolerance | .005 in |
| Surface Finish | 63 |
Verify specifications before installation.
