Shell
The shells are made from special ERW conveyor tube with close tolerance ensuring smooth, eccentrically free running with minimum diameter runout.

Bearing
TechnoRoll rollers are fitted with single row deep groove ball bearings, ZZ, RS sealed type with C3 or C4 internal clearance and use long life grease. We have selected these bearings because they give up from eight to ten minutes angular deflection in their operation, coupled with even load distribution within each bearing race.

Shaft
Made from carbon steel round bar. The round bar are cut, turned with fine tolerance and ground bearing seating to ensure press fit between bearing and shaft

Testing
All the rollers are thoroughly tested for TIR, rotation resistance, balancing, and water resistant sealing before dispatch.

Bearing Housing
The bearing housing are made of deep drawn quality sheet pressed to high degree of accuracy, keeping tolerance at bearing seating region as specified by the bearing manufactures.

Balance
Destructive vibration can arise from unbalance of rollers producing fluctuating loads on the idler and supporting structure. Excessive unbalance can cause hammer on the bearings and loosening of bearing and seal fits. TechnoRoll rollers to a range of balance requirements from commercial quality through to dynamically balanced for demanding high speed – low noise applications. Every roll is test run after final assembly.

Labyrinthseal
Time tested and universally accepted multistage sealing made from polymer and provide on both sides of the bearings with dust-cover and weather-seal. The components are assembled together with high quality bearings.

Total Indicator Runout(T.I.R.)
Excessive T.I.R. causes noisy belt flap, structural vibrations, roll unbalance and reduced bearing life. TechnoRoll shells are checked regularly during manufacture to ensure they comply with quality standards established by TechnoRoll. The high level of balance achieved by TechnoRoll begins with the quality of the electric resistance welded high speed conveyor tube

Welding
Jig welding of the base frames ensures slotted mounting brackets are accurately aligned. This has the effect for reducing installation costs and belt wear. All roll supports are welded to provide smooth weld surfaces for the application of protective coatings. Welds are cleaned prior to surface treatment.

Surface Protection
Technoroll painting standard powder coating or epoxy paint. Frames and structural members are coated with epoxy paint or galvanized.

Quality Control
Our products have passed the quality control procedures that are intended to ensure that products manufactured do a set of defined criteria for premium quality or meet the requirements of the clients or customers.