ZF TRANSMISSIONS 1268304005 GEAR 5TH SPEED 24T – Precision-Cut Transmission Gear for ZF Manual Gearboxes
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- In-stock availability for urgent repairs.
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- P/N:1268304005
ZF TRANSMISSIONS 1268304005 GEAR 5TH SPEED 24T – Precision-Cut Transmission Gear for ZF Manual Gearboxes
Product Overview
The ZF TRANSMISSIONS 1268304005 GEAR 5TH SPEED 24T is an OEM-quality helical gear designed for 5th speed synchronization in ZF manual transmissions. This 24-tooth gear (module 3.5) features precision-ground teeth with optimized helix angles for smooth, quiet power transfer in ZF S6-650 and S6-850 gearboxes. Manufactured from case-hardened 18CrNiMo7-6 steel, it meets exact ZF specifications for heavy-duty commercial vehicle applications.
Key Features:
✔ Genuine OEM Replacement – Identical to ZF 1268304005 specifications
✔ Premium Metallurgy – 18CrNiMo7-6 steel (DIN EN 10084)
✔ Precision Machining – DIN 6 gear quality (AGMA 12)
✔ Wear Resistance – 0.8-1.2mm case depth (HRC 58-62)
✔ Optimized Design – 22° helix angle for reduced NVH
Technical Specifications:
- Part Number: 1268304005
- Type: 5th speed helical gear (24 teeth)
- Material: 18CrNiMo7-6 case-hardened steel
- Module: 3.5mm
- Pressure Angle: 20° normal / 17.5° transverse
- Helix Angle: 22° right-hand
- Face Width: 32mm (±0.05)
- Bore Diameter: 55.000-55.025mm
- Hardness:
- Core: 30-34 HRC
- Teeth: 58-62 HRC
- Runout Tolerance: ≤0.03mm TIR
- OEM Reference: ZF 1268304005
Professional Installation Guide:
Pre-Installation Checks:
- Verify mating gear wear patterns (≤0.1mm pitting)
- Measure shaft journal diameter (54.975-55.000mm)
- Clean oil passages with compressed air
Installation Tools Required:
- Gear puller set (55mm internal)
- Induction heater (max 150°C)
- Dial indicator with magnetic base
Installation Procedure:
- Heat gear to 120°C for interference fit
- Align timing marks with mating gear
- Press onto shaft using arbor press
- Torque retaining nut to 350Nm +30° angle
Post-Installation Verification:
- Check tooth contact pattern with Prussian blue
- Measure backlash (0.08-0.12mm)
- Perform 500km run-in at reduced load
Packaging & Shipping
By Express : Suitable for sample order or <50 KG Fast:3-10 days High shipping cost Door to door service
By Air : Suitable for >50 KG Fast: 3-7 days Lower than express cost Airport to airport service
By Sea: Suitable for >300 KG Lower cost port to port service
As a leading supplier and dealer of ZF parts, we provide genuine components to maintain the integrity and efficiency of your gearbox system. Trust in our expertise and quality assurance to keep your ZF gearbox running smoothly.
| Installation Tips | Surface prep: Degrease with ZF Cliclean 3 solvent； Gasket application: Use Loctite 518 in continuous 1.5mm bead；； Alignment: Install using factory alignment pins (ZF tool B40 5003 recommended)；； Torque sequence:Initial: 12Nm star pattern—–Final: 28Nm + 90° angle torque；；；； Post-install: Pressure test at 2.5 bar before fluid fill |
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