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Round head needle roller
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Needle rolling manufacturer introduces installation skills of needle rolling to you

2020-02-18 16:28:18
Times

For the special-shaped shaft pin without inner hole or outer side, the turning surface of the shaft or cover hole shall be coated with a layer of lubricating grease before installation, and the needle shall be close to the lubricating grease at the installation position. A gap should be left when sticking a needle. The size of the gap should be 0 in the circle of the cylindrical roller bearing. 5mm is appropriate. It is not allowed to squeeze a needle in or miss a needle. As a result, the rolling bearing will be stuck and can not rotate. When missing, the gap is too large, which is easy to cause the needle to twist and break during the operation of the rolling bearing.

It is emphasized here that for the special-shaped hole pin that can only be punched on the outside of the die, because the outer wall is too thin to be knocked and installed by the round head hammer, the punch should be used to press in. Because of the uneven working pressure when the ball head hammer strikes, it is very easy to cause partial deformation on the outside of the cylindrical roller bearing.

The installation of full loaded cylindrical roller bearings is generally carried out by using auxiliary sleeve specifications. At this time, the specification of auxiliary roll or auxiliary sleeve shall hold the needle to prevent it from falling out, the motor shaft shall scrape the needle due to its own fillet, and the specification of auxiliary roll or auxiliary sleeve shall gradually withdraw with the cylindrical roller bearing moving slowly in the motor shaft, until it is placed in the working position.

The diameter of auxiliary roll and auxiliary sleeve shall be 0.1-0.3mm smaller than the shaft diameter. During installation, first apply lubricating grease on the outer inner surface of the rolling bearing, stick the needle against the inner surface (leave a gap when putting a needle), then send the specification of the auxiliary roller or auxiliary sleeve that replaces the inner hole of the motor shaft or rolling bearing into the special-shaped key pin, and make the inner hole point to the inner hole of the mounting shaft or the inner hole of the rolling bearing that has been installed on the shaft, and then use the press or The ball head hammer is used to knock and press.

The cylindrical roller bearing can also be installed in that way. Apply a layer of grease to the specification and diameter of the auxiliary sleeve, and sleeve it into the outside of the rolling bearing, so that the specification of the auxiliary sleeve and the outside of the rolling bearing form a ring-shaped hole, and then install a needle on the ring-shaped hole. After the needle roller is installed, the specification of the auxiliary sleeve can be released with the working central shaft.

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Cixi Hongguang Machinery Co., Ltd.

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