Although the TRPF/GRPF milling system increases the crushing capacity, it is experienced that conventional TRPF/GRPF technology, which is developed abroad, is not convenient in India . This is because it requires extensive modifications in the foundations, drives, gearing. It also has a long pressure chute, which results in larger contact angle and uneven mill feeding.

SS Engineers has developed the SSTRPF (Short Space Toothed Roller Pressure Feeder)/SSGRPF (Short Space Grooved Roller Pressure Feeder) System , which has removed all the drawbacks in the imported technologies. It provides smaller contact angle, reduced length of pressure chute, economic power consumption and better mill feeding, which gives increased crushing rate and better juice extraction. Conversion from 3 roller to 5 roller mill with SSTRPF or SSGRPF is done with minimum work of shifting, drive gearing and foundation changes.

Till now, SS Engineers has performed 150 such conversions of existing Three Roller Mills into Five/Six Roller Mills. The Sugar factories with SSTRPF fitted by SS Engineers, on 30" x 60" common Drive Mill Tandem, have achieved crush rates of over 4500 TCD @ 15% fiber, which is the highest in India with RME above 96%.