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Home > Products > Axle Assemblies > Semi Bonded Rubber Suspension Axles

Our semi bonded suspension axles work in torsion. The suspension within is constructed by welding a drop arm to a shaft which then has rubber bonded around the shaft to make a square cartridge. The cartridge is then pushed into either end of a length of tube. The length of the tube and the position of mounting brackets which are welded to it are determined by the customer.

Axles are supplied ready tracked and can be used as part of the structure of a chassis.


Our semi bonded suspension technology (R-flex semibond) comprises of a central shaft surrounded by a metal case (which may be galvanised upon request). High density rubber is bonded to the central shaft and completely fills the space between the metal casing and shaft itself. The unit also includes a support brush at the drop arm end which is inserted into the end of the casing and helps to maintain the position of the shaft and wheel alignment. The rubber filling is engineered to specific load deflection characteristics requested by customers and provide a reliable and predictable suspension solution over a long service life. They provide greater predictability and are capable of dealing with heavier duty uses than our insert rubber units (R-flex insert), yet provide a more affordable solution than our fully bonded units (R-flex fullbond).


Our semi bonded unit central shafts and arms can, upon request, all be splined, allowing the level of the arms to be altered for different ride heights whilst providing incredibly strong connections with mounting plates. It also means arms can be replaced without changing the whole unit, further reducing operational costs.


Our semibonded axle systems can be supplied with/without stub and hub (hub can be braked/unbraked using standard, auto-reverse, hydraulic or mechanical brakes)

Standard Semi Bonded Suspension Axle Capacities

Product CodeTypeCapacityStuds
BA6U440Unbraked hubs - 4 stud 4 PCD600kg3/8"
BA6U410Unbraked hubs - 4 stud 100mm PCD600kgM12
BA6U455Unbraked hubs - 4 stud 5½ PCD600kgM12
BA6B160A440160 x 35 A/R brakes - 4 stud 4 PCD600kg3/8"
BA6B160A410160 x 35 A/R brakes - 4 stud 100mm PCD600kgM12
BA9U440Unbraked hubs - 4 stud 4 PCD900kg3/8"
BA9U410Unbraked hubs - 4 stud 100mm PCD900kgM12
BA9U455Unbraked hubs - 4 stud 5½ PCD900kgM12
BA9B160A440160 x 35 A/R brakes - 4 stud 4 PCD900kg3/8"
BA9B160A410160 x 35 A/R brakes - 4 stud 100mm PCD900kg3/8"
BA9B203A410203.2 x 40 A/R brakes - 4 stud 100mm PCD900kgM12
BA9B203A45510203.2 x 40 A/R brakes - 4 stud 5½ PCD to suit 10" wheel rim900kgM12
BA9B203A455203.2 x 40 A/R brakes - 4 stud 5½ PCD900kgM12
BA13U455Unbraked hubs - 4 stud 5½ PCD1300kgM12
BA13U560Unbraked hubs - 5 stud 6 PCD1300kgM12
BA13U565Unbraked hubs - 5 stud 6½ PCD1300kgM16
BA13B203A45510203.2 x 40 A/R brakes - 4 stud 5½ PCD to suit 10" wheel rim1000kgM12
BA13B203A410203.2 x 40 A/R brakes - 4 stud 100mm PCD1300kgM12
BA13B203A455203.2 x 40 A/R brakes - 4 stud 5½ PCD1300kgM12
BA13B203A560203.2 x 40 A/R brakes - 5 stud 6 PCD1300kgM12
BA13B203A5140203.2 x 40 A/R brakes - 5 stud 140mm PCD to suit 12" wheel rim1300kgM16
BA13B203A565/56513203.2 x 40 A/R brakes - 5 stud 6½ PCD to suit 13" wheel rim1300kgM16
BA15U455Unbraked hubs - 4 stud 5½ PCD1500kgM12
BA15U560Unbraked hubs - 5 stud 6 PCD1500kgM12
BA15U5140Unbraked hubs - 5 stud 140mm PCD1500kgM16
BA15U565Unbraked hubs - 5 stud 6½ PCD1500kgM16
BA15B200A455200 x 50 A/R brakes - 4 stud 5½ PCD1500kgM12
BA15B200A560200 x 50 A/R brakes - 5 stud 6 PCD1500kgM12
BA15B200A5112200 x 50 A/R brakes - 5 stud 112mm PCD1500kgM12
BA15B200A5140200 x 50 A/R brakes - 5 stud 140mm PCD to suit 12" wheel rim1500kgM16
BA15B200A565/56513200 x 50 A/R brakes - 5 stud 6½ PCD to suit 13" wheel rim1500kgM16
BA18U560Unbraked hubs - 5 stud 6 PCD1800kgM12
BA18U565Unbraked hubs - 5 stud 6½ PCD1800kgM16
BA18B250A560250 x 40 A/R brakes - 5 stud 6 PCD1800kgM12
BA18B250A5140250 x 40 A/R brakes - 5 stud 140mm PCD to suit 12" wheel rim1800kgM16
BA18B250A565/56513250 x 40 A/R brakes - 5 stud 6½ PCD to suit 13" wheel rim1800kgM16


Get In Touch...

If you want to know more about how we can help your engineering needs or you have any further questions please feel free to call on +44 (0)1789 778 041, email [email protected] or complete our general enquiry form today.

+44 (0)1789 778 041[email protected]
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Waterloo Industrial Estate
Waterloo Road
Bidford on Avon
B50 4JH
United Kingdom
Tel+44 (0)1789 778 041 Fax+44 (0)1789 490 331 [email protected]