The difference between cam with roller follower bearing and ordinary bearings:
In order to reduce the camshaft journal and seat hole wear, so that the cam with roller follower bearing rotate flexibly, in the middle of the cam with roller follower bearing (also called the CAM bearing bush).
The cam with roller follower bearing is a round tube with a steel shell made of steel tape or seamless steel tube, and the side in contact with the journal is poured with a soft alloy.It is installed in the bearing seat hole of the cylinder body, and each bearing is drilled with an oil hole in the corresponding position.
Material and performance of cam with roller follower bearing:
1)the steel back is made of 08, 08A1, 10 or 20 high-quality carbon structural steel.The chemical composition and mechanical properties are in accordance with GB 669 "High Quality Carbon Structural Steels and General Technical Conditions".
2) The grade, main chemical composition and hardness of the alloy layer should conform to the following table.
Main chemical composition /%
Hardness/HB
Cu (copper) Pb (lead) Sn (tin) Sb (antimony) Al (aluminum)
Chcupb 24.5-1.6 allowance 22-27 1-2 -- 35-50
CHPBSB10-6 -- allowance 5-7 9-1 -- 17-26
ChALSN20-1 0.8-1.2 -- 17.5-22.5 -- margin 30-40
2)Metallographic structure.The metallographic structure of copper-lead alloy shall conform to the provisions of the metallographic standard of copper-lead alloy, and the metallographic structure of tin-base and lead-based alloy shall conform to the provisions of the metallographic standard of tin-base and lead-based alloy
The cam with roller follower bearing surface is tinned (copper), the coating thickness is 0.001-0.003mm.Coating should be uniform, no plating or not plating defects.If tin is not plated, it shall not rust within the validity period.No sharp edges and burrs are allowed on cam with roller follower bearings.
If you need cam with roller follower bearing or need any other bearings, please feel free to contact me!
Contact: Leon
Email: nsk@zyslbearing.com
Skype: lh19881023
MP/Whatsapp: +8615098916271
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