Product Characteristics

• Jalman Precision Co., Ltd. manufactures two types of track roller bearings in general.
• One is stud type track roller and the other is yoke type track roller.
• JMC stud type track roller bearing is composed of stud that works as the shaft, roller and the needle that is located between anterior part of roller and stud to help smooth rotation during operation.
• Flange type shaft head and thrust fastening ring are non-removable type that guides the needle to move smoothly and guides the outer ring towards the axial direction.
• Bearing steel is used for most components including roller, needle, fastening ring and shaft (greater than CF 12).

Product Usage

• This bearing is suitable for rated load and medium load at low speed and medium speed.
• It is used for various purposes for rollers including guide rollers, rocker valve rollers, slide cam rollers and pressure rollers. It is also suitable for various machines including automatic instruments, exclusive instruments, cam driving part, conveyor and tool changer of machining center.

Design and Lubrication

• Generally, JMC stud type track rollers are nonseparable bearings and are available in two types: cage type and filling type.
• For the cage type, the needle is splitted between the shaft and the roller and grease acts between the needle to smooth the needle's rolling and is suitable for high speed and medium load.
• On the other hand, a filling type full of needles without a cage is a non-separating type bearing which is subjected to low-speed rotation and high load and periodically refueling.

• Stud head of JMC stud type track roller has hex wrench socket where you can supply grease to needle through the inlet. For products larger than CF12, you can also supply oil through screw part of the stud.
• Jalman Precision Co., Ltd. also supplies appropriate grease accessories such as special synthetic resin plugs for head hex wrench socket on the stud head, round plugs for covering hole of the stud thread and nipple.

Notation Example