Page 29 - BPW ECO Disc service guide

BPW ECO PLUS HUB

General information

BPW ECO PLUS BEARINGS

BPW ECO Plus hub bearing
If you require long service life, rapid maintenance & low maintenance costs from your axle there is only one option for you:
ECO Plus.
Working on the basis of the special BPW ECO hub system the ECO Unit has been further developed to create the ECO
Plus bearing system. The low maintenance hub has an integrated multi-seal system for protecting the tapered roller
bearings against dust and dirt. A central threaded connection with the integrated torque limiting function ensures the bear-
ing per-load is always optimum.
BPW ECO Plus bearing - features & benefits
- Low maintenance, encapsulated bearing unit (ECO Unit) with integrated multi-seal system to protect the taper roller
bearings from dust & dirt.
- Integrated torque limiter in the axle nut (ECO Plus ) prevents improper use when tightening.
- Bearings are precisely re-adjusted after every disc replacement.
- The ECO Plus Hub is Guaranteed in Australia for 3 years or 1,000,000km (whichever comes first) for highways use
and 1 year for off road use (conditions apply*).
- Compact bearing system with DIN-ISO taper roller bearings available worldwide for excellent availability & rapid service.
- Removal of the complete hub unit - thanks to central threaded connection - with simple tools.
- Excellent bearing service life with minimal life cycle costs.

HUB SEAL FOR ECO PLUS BEARINGS

The innovative ECO Seal sealing system is used on all axles with the BPW ECO Disc Trailer disc brake.
With this hub seal, the primary seal lip (ECO Seal) no longer seals directly against the race of the hub but instead against
a race which is integrated in the seal itself.
This new design enables circumferential velocity of the seal to be significantly reduced, and with that, the amount of wear.
In addition, the wheel bearing is provided with even better protection against dirt penetration by means of the covering
dust & dirt sealing lips.

Benefits:
- An internal pre-stressed main lip seal with a low circumferential speed & a low
thermal load, resulting in low wear.
- An approximately 30% reduction in frictional resistance inside the seal
(compared with conventional seals).
- The seal is well protected during service due to the cartridge construction.
- Pre-stressed main seal lip with ventilation function, no opening at low pressures.
- No coarse dirt seal required.

SB Knorr Bremse Disc Brake Parts Catalogue 01/2017 29