The idler is used to guide the track to rotate correctly and prevent it from deviating and deviating.

Most excavators also function as rollers. This can increase the contact area of the track to the ground and reduce the ground pressure.

The wheel surface of the guide wheel is made smooth, with the arm ring in the middle as a guide, and the ring surfaces on both sides support the rail chain.
The smaller the distance between the guide wheel and the closest roller, the better the guidance.


40, 50 steel, or 35MN, cast, tempered, hardness HB230-270
Key points:
In order to make the guide wheel work and extend its life, the radial runout of the wheel facing the center hole should be less than or equal to 3MM, and it should be correctly aligned during installation.

With thorough knowledge of the industry, we are engaged in manufacturing, supplying, and distributing undercarriage parts. Manufactured in accordance with the industry-set standards, these undercarriage parts are acknowledged for their accurate dimensions, fine finish, corrosion resistance, and longer life span. These Idler Assy parts are manufactured by using high-grade material procured from our professional factory. we also offer other Komatsu undercarriage parts including excavator track rollers, top rollers, excavator sprockets, track shoes, track chains, pins and bushings, bolts and nuts, excavator buckets, etc. Welcome to order excavator front idler Online.
Our Idler assy is used for a range of models of equipment as follows
1. Caterpillar: Excavator model: E110B, E180, E200B, E240 (MS180), E300B, E311, E320, E330
Bulldozer model: D3C, D4D, D5, D5B, D5D, D6C, D6D, D6H, D7G, D8K
2. Daewoo: Excavator model: DH220, DH280, R200, R210, S55-V, S280
3. Hitachi: Excavator model: EX40, EX60, EX-100, EX100M, EX120, EX150, EX200-1-2-3, EX300-1-2-3-5, EX400-1-3, UH07, UH08
4. Kato: Excavator model: HD250, HD400, HD450, HD500, HD550, HD700, HD770, HD800, HD820, HD850, DH880, HD1020, HD1220, HD1250, HD1430, DH1880
5. Kobelco: Excavator model: SK07N2, SK07-7SK200, SK220, SK300, SK320
6. Komatsu: Excavator model: PC40, PC60-5-6-7, PC100, PC120, PC130, PC200-1-3-5-6, PC240, PC220-1-3-5, PC300-3-5, PC400-1-3-5
Bulldozer Model: D20, D30, D31, D50, D60, D75, D80, D85, D155
7. Mitsubishi: Excavator model: MS110, MS120, MS180
8. Samsung: Excavator model: SE55, SE210
9. Sumitomo: Excavator model: SH120, SH200, SH280, SH300, SH400

Brands Supported Include

We work with clients to integrate the flow of the customer experience across channels (e.g., face-to-face, telephone), opening up new lead sources, and supporting sales for smaller.

We sell spare parts for crushers, underground mining trucks, rock drills, drilling rigs, air compressors, and other equipment. Please send us the part number, picture of the machine or the machine nameplate. We will check the price and delivery time for you. If you have any questions, please get in touch with us .