Al-ko AK 351 up to 3500kg for 50 / 60 mm round tube ball coupling for car trailers
112,90 €
Al-ko AK 351 up to 3500kg for 50 / 60 mm round tube ball coupling for car trailers
112,90 €
Shipping price from: 6,90 €
Product Product in stock
Al-ko AK 351 up to 3500kg for 50 / 60 mm round tube ball coupling for car trailers
Product.Nr.: 990014688
- Al-ko AK 351 Profi ball coupling
- suitable up to 3500 kg permissible total weight
- Screw connection horizontal + cross M12
- drawbar load up to 350kg
- With safety indicator to show whether it is correctly coupled
- with wear indicator
- Suitable for 50 and 60mm drawbars (adapter included)
- Hole spacing horizontal 54mm
- Hole spacing crosswise 40mm
- 2 holes for M12 screws
- ECE type approval no.: e1 00-1594 - Ref. no. AL-KO 1224333 (replaces AK 350, 249164)
- Scope of delivery:
- 1 ball coupling
- 1 adapter Ø60 to Ø50 (2-part)
- 2 hexagon bolts M12
- 2 hexagon lock nuts M12
The Al-Ko AK 351 Profi ball coupling is designed for trailers with a gross vehicle weight rating of up to 3,500 kg and provides a reliable connection between the towing vehicle and trailer. It can be loaded with a drawbar load of up to 350 kg and is suitable for both horizontal and crosswise screw connections. It is mounted via two holes with a hole spacing of 54 mm (horizontal) or 40 mm (crosswise), which are intended for M12 bolts. An integrated safety indicator shows whether the coupling is connected correctly, while a wear indicator monitors the condition of the coupling and signals the need for maintenance. The ball coupling is compatible with drawbars with a diameter of 50 mm and 60 mm, and a corresponding adapter is included in the scope of delivery. In addition to the ball coupling, the scope of delivery includes a two-part adapter Ø60 to Ø50, two M12 hexagon bolts and two matching lock nuts.
Bedienungsanleitung_ALKO_AK_301_351.pdf (2.98 MB)
Frequently asked questions about this product
Ball head on the towing vehicle: The new ball head has a diameter of 50 mm; the wear limit is 49 mm. Measure in several directions using a calliper — the ball wears down in an oval shape, and even a single point measuring less than 49 mm means it needs replacing.
Tow ball coupling on the trailer: Signs include noticeable play on the ball, rattling whilst driving, or a coupling that no longer engages properly. Many couplings have a wear indicator on the handle — if the pointer is in the red zone, it needs replacing.
Assess both together: a new coupling fitted to a worn-out ball will continue to rattle.
Lubrication: The ball and coupling wear out much faster if left dry. An important exception is anti-sway couplings: their friction linings must remain grease-free; in this case, only the ball is cleaned. Grease on the linings renders the anti-sway damping ineffective and ruins the linings.
A worn-out pair will be flagged during the annual general inspection. Replacement: Ball couplings and accessories.
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ZIP Code: 89359
City: Kötz
Country: DE
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