🔩 Centre Coupling Flange – Leyland & Eicher Multi‑Piece Driveline
📌 What It Is
A centre coupling flange (also called centre joint coupling) is a propeller shaft linking component used in heavy/commercial vehicles with multi‑section driveshafts. It connects the front and rear propeller shaft sections (or intermediate shaft) and transmits rotational torque from the gearbox toward the rear differential while allowing for slight movement and misalignment caused by chassis flex and suspension travel. It typically has serrated/splined faces and bolt holes for positive engagement with mating drivelines.
⚙️ Application Fitments
This particular flange is suitable for the following trucks when used with a multi‑piece propeller shaft:
Leyland L/L‑3116
Leyland L/L‑2516
Leyland L/L‑2515
Eicher 35.31
Commonly found on heavy truck drivetrains where two shaft sections are joined near the vehicle’s centre with a support bearing.
📐 Typical Specifications (Approx‑matched from parts catalogs)
| Attribute | Specification |
|---|---|
| Part Type | Centre Joint Coupling Flange |
| Applicable Vehicles | L/L‑3116, L/L‑2516, L/L‑2515, Eicher 35.31 |
| Plate Diameter | ~150 mm (6″ class) |
| Number of Splines | 34 splines (serrated profile for torque lock) |
| Number of Bolt Holes | 4 |
| Bolt Size | ~13 mm (typically 19 No. class) |
| Plate Height | ~63 mm (total flange thickness/extension) |
| Flange Shape | Round serrated flange |
| Catalog Reference | CCS03 / CF‑747 style part in parts listings for these models |
🟡 In aftermarket catalog listings, such a part commonly appears as a Centre Joint Coupling Flange for L/L 3116 / 2516 and 2515 and Eicher 35.31, with 34 splines, 4 bolts, serrated torque surface and ~63 mm height — designed for multi‑section propeller shafts.
🔄 Where It Fits
The centre coupling flange is installed between the two halves of a two‑piece propeller shaft. Typically the configuration is:
Gearbox Output → Front Driveshaft Section → Centre Coupling Flange (with Centre Bearing) → Rear Driveshaft Section → Rear Differential → Axles
This flange works together with a centre bearing assembly that supports the driveline and reduces vibration.
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