Rohloff Lock-Ring tool – for 8540L/8540SL
The Rohloff Lock-Ring tool (8518) loosens and tightens the lock-ring on the Rohloff Splined Carrier L and Slim L (8540L / 8540SL) – the carriers used with Gates Carbon Drive belt sprockets on the Speedhub.
Why the lock-ring tool?
Correct torque. The lock-ring must be tightened to 30 Nm; the tool lets you do it with a torque wrench.
Belt drive ready. Made for the lock-ring carriers that hold Carbon Drive belt sprockets on the Speedhub.
Workshop partner. Also used together with the Carrier removal tool (8522).
Steel. A solid tool for a high-torque job.
Why a lock-ring?
The lock-ring fixes the belt sprocket laterally and, according to Rohloff, eliminates the micro-movement that can occur under Carbon Drive belt pre-tension.
Who is it for?
- Speedhub and Gates belt drive riders. Change or turn the belt sprocket yourself.
- Workshops. Needed for every 8540L/8540SL carrier service.
Compatibility
| Rohloff article no. | 8518 |
|---|---|
| Fits | Splined Carrier L (8540L), Splined Carrier Slim L (8540SL), lock-ring 8538 |
| Lock-ring torque | 30 Nm, no thread-locking compound |
| Material | Steel |
Frequently asked questions
Can I use a hook or face wrench instead?
Rohloff mentions a face or hook wrench as alternatives, but without the lock-ring tool you cannot measure the 30 Nm torque.
Do I need it for the regular splined carrier?
No. The regular and slim carriers without lock-ring (8540 / 8540S) are tool-free.
About Rohloff
Rohloff AG is a German engineering company based in Fuldatal near Kassel. It makes the SPEEDHUB 500/14, the 14-speed gear hub that touring, trekking and expedition riders have trusted for decades, and is also known for its workshop tools, chain and sprocket wear gauges and Oil of Rohloff chain lubricant.
BoodaBike (Massive Bikes, Budapest) is an official Rohloff service centre, trained by Rohloff, and an official European distributor of Rohloff hubs and parts. Everything we sell is genuine Rohloff, and we are happy to help you pick the right part.