QCB turns the world..
QCB manufactures a wide range of Slewing Rings (from 100mm to 11 000mm outside diameter), Slewing Drives, Ring Gears and Pinions. With carefully selected industry partners QCB can offer turnkey rotation systems for the smallest industrial systems up to the largest offshore installations.
QCB has years of experience, backed by state of the art design software to ensure the optimum solution for your needs. QCB has become a trusted name in slewing ring bearings with a satisfied and international customer base in industries as diverse as mining machinery, materials handling, offshore oil and gas, access platforms, process treatment plants, wind power, special effects and art installations.
The QCB range
Slewing rings are large diameter rolling bearings that can accommodate axial, radial and moment loads in combination, while rotating or making oscillatory motions. Slewing rings consist of 2 or 3 rings between which either spherical or cylindrical rolling elements are arranged with suitable spacers or cage. The rings incorporate mounting and handling holes, as well as integral spur, helical or worm gearing. Lip seals prevent the ingress of contaminants into the raceway.
As well as our own designs, we offer equivalents to other brands such as Torriani Gianni, La Leonessa, BRB Technologies, INA-FAG (now the Schaeffler Group), Roballo, Roth Erde, Rollix Defontaine, Avon, Taperex, Kaydon, Rossi-MRI, RKS, SKF, RIMA, IMO, Titanus, Silverthin, PSL, Drecon to name a few…
QCB has experience in the manufacture of
Single row ball bearings
Double row ball bearings
Crossed roller bearings
Combination ball / roller bearings
Triple row roller bearings
Wire race bearings
Precision rotary turntables
Harmonic reducer bearings
Segmented bearings and ring gears
Not only do we have an extensive catalogue reference library, and have developed an extensive interchange system.
Essentially a slewing drive is a slewing ring mounted on a base plate onto which a worm shaft is fixed which engages on the helical or worm gear in the outer ring. Hydraulic or electric motors can be used to provide rotation.
During 2021 we will be introducing a new spur-gear based slewing drive range.
Geared motors and pinions
Geared rings require some form of drive. Working in conjunction with leading manufacturers QCB offers turnkey solutions with matched pinions, electric or hydraulic geared motors (helical-bevel, worm or planetary style), servo-motors or air motors.