RKM/GCS RS water proof and dust proof heavy-duty roller/Idler--Friction upper and lower aligning roller sets, firction training roller sets Roller Diameter (mm) Roller specRoller Standard 63.5, 76, 89, 102, 108, 114, 127, 133, 140, 152, 159, 165, 178, 194, 219... 1. TubeQ235, Shaft A3 cold-drawn; 2. Roller surface could be rubber coated or rubber linedor painted with any color; 3. GCS/RKM RS series is water-proof and dust-proof. 4. Shaft ends print with production date for traceability concern. 5. Protective cover and bearing with "GCS" or "RKM" letter 6. Precision bearing with permanent lubricant 7.Use multi-labyrinth seals 8. All rollers delivered are attached with inspection reports. GB, JIS, AS, ------ (as per customer requirements) 1.This RS series rollers belong to GCS/RKM high-end conveyor roller. 2. This frictionupper & lower aligningroller sets/ friction training roller setshave high precision structure, composing as mang as nine seal parts which ensure the roller good capability of water and dust resistance. These friction aligning roller sets could prevent the belt run-out effectively. 3. The bearing housing and tube is full welded to ensure the well contact of the whole roller. Grease is permanent lubricant. 4. Roller surface could be painted any color as per customer request. 5. Material: normally Q235 tube (specially for conveyor roller), A3 cold-drawn shaft (Could be of very high precision to meed different customer requirement.) 6. Each roller would be through strict inspection and test to ensure every outcoming roller are of true high quality. Welcome to contact us at any time for conveyor roller/idler. We are professional and excellent in technology and service. We know how to make our converyor roller to move your business! Further check www.rkm.cn