🔩 Differential Coupling Flange – Eicher (95 mm Height, Serrated, Round)
A differential coupling (diff coupling) flange for Eicher trucks is a driveline component that connects the rear differential output shaft to the driveshaft/propeller shaft assembly. It helps transmit torque from the differential to the driveline while maintaining alignment and absorbing some flex. The serrated (toothed) round face provides better mechanical engagement with the mating flange or yoke, reducing slippage under heavy load conditions typical in commercial vehicles.
📌 Typical Specification (Commercial Vehicle Coupling)
Based on spare part catalog references for coupling flanges:
Type: Differential Coupling Flange (Round, Serrated)
Height (Total Thickness): ~95 mm — measured axially from mounting face to flange surface.
Shape: Round plate with serrated engagement surface.
Bolt Holes: Commonly 4 holes for mounting to the companion flange/yoke.
Application: Heavy‑duty driveline — connects rear differential to propeller/driveshaft. Standard part configurations appear in multi‑vehicle catalogs, including Eicher and similar CVs.
Note: Exact spline count, plate diameter, and bolt pattern vary by specific Eicher model/axle spec; catalogs often group similar part specs across multiple vehicles.
⚙️ Function in the Vehicle
✔ Torque Transfer: Transfers drive torque from the differential pinion flange to the driveshaft.
✔ Positive Engagement: Serrated face provides enhanced mechanical grip between mating components, reducing play and vibration under load.
✔ Load Handling: Built for heavy‑duty truck use, capable of handling high torque from Eicher’s axle/differential assemblies.
🧰 Why Serrated and Round Design?
Serrated / Toothed Face: Helps distribute load across multiple contact points, improving engagement strength compared with smooth flanges.
Round Plate: The most common coupling format for axle and differential connections due to balanced load distribution and ease of machining/installation in circular housings.
🛠️ Applications
This type of differential coupling is widely used in heavy‑duty truck drivetrains, including older and newer Eicher commercial vehicles as part of the rear axle final drive assembly or intermediate driveline connections.
If you can share the exact Eicher model and axle type (for example Eicher Terra 16, 20.16, or another series), I can lookup precise bolt pattern, spline count, oil seal diameter, and OEM part number for the 95 mm diff coupling flange that fits your vehicle.