Makes mounting an easy task

The Spaaj Oil Injection Service allows mounting and extraction of pinions, bearings, Couplings, Gear wheels, Railway wheels, Propellers, Built-up crankshafts and other components with a safe, controllable and rapid manner. The method does not require keyways to be machined on the shaft, saving valuable time and money in materials and production.  

Injecting oil between two surfaces creates a thin oil film, which reduces the friction between them, thereby significantly reducing the mounting force required, the thin oil film also minimizes the risk of metallic contact when mounting, reducing the risk of component damage.   

Easy, quick and effortless dismounting 

When using the Spaaj Oil Injection Service for dismounting, the mating surfaces are separated by a thin film of oil injected under high pressure, thereby virtually eliminating the friction between them. The method is versatile as it can be used for dismounting bearings, pinions, shafts etc. and other components mounted on either cylindrical or tapered seating. When dismounting components mounted on cylindrical seating, the injected oil can reduce the required pulling forces by up to 90%. Subsequently, the physical effort required when using a puller to remove the bearing from its seating is significantly reduced.  

When using the Spaaj Oil Injection Service to dismount components mounted on tapered seating, the interference fit is completely overcome by the injected oil, the component is then ejected from the seating with great force, making the use of a puller unnecessary. In this case, a stop-nut must be used to control the ejection of the bearing. The Spaaj Oil Injection Service is used for many applications such as:  

  • Gear Pinions
  • Traction Motor Pinions
  • Couplings
  • Gear wheels
  • Railway wheels
  • Propellers
  • Built-up crankshafts