This type of heavy weight steel roller conveyor has an idler diameter of 60.5, wall thickness is t3.8, idler pitch is min P75. Idler width (nominal) is 100W-1000W in standard increments of 50mm, free sizes are also possible. Changed the precision-machined bearing of the previous model R-6038 to a bearing that meets standards, improving the quality of the idler, low-cost. 90 standard frame.