Carrier Roller

The carrier roller is one of the four wheels in the chassis of tracked construction machinery, mainly composed of roller shell, shaft,oil seal, bushing bronze, collar, O-ring.

The materials for the carrier roller shell are generally 40Mn2 or50Mn. The main process is forging, mechanical processing, and then heat treatment. The hardness of the wheel surface after quenching should reach HRC52-58 to increase the wear resistance of the wheel surface. The material of the carrier roller shaft is mostly 45# round steel, and the machining accuracy requirements are relatively high. Generally, CNC machine tools are required to process it to meet the requirements. After processing, quenching treatment is also required, and the hardness reaches around HRC52-56.

The carrier roller is located above the X frame to maintain the linear motion of the track. If the carrier roller is damaged, it will cause the track not maintain a straight line.

The function of the carrier roller is to support the track, prevent excessive sagging of the track, and provide a certain degree of tension on the track to reduce the vibration phenomenon of the track during movement. Simultaneously guide the direction of movement of the upper track and prevent the track from sliding sideways.

Product Parameter (Specification)

The carrier roller are strictly produced in accordance with production requirements. The material selection and assembly of the carrier roller comply with the drawings, and every parameter and indicator of the product is rigorously measured and tested.

The following is the product specification table for the carrier roller:

Product nameCarrier roller
Roller shell material50Mn/40Mn2
ColorBlack or yellow
Surface of hardnessHRC52-58
Shaft material45#/40Cr
 Warranty periodOne year
Case depth5-10mm
Delivery period30day/45-60day（negotiable）
Using time1000hour

Product features: Stable structure,shaft and bushing bronze is standard thickness and length. The copper layer is not easily peeled off after rolling, reaching over 3.5mm. Using high-quality bimetallic bushing bronze. Reliable sealing, wear-resistant roller shell, and low rolling resistance.
Roller shell: forging, rough turning, drilling oil holes, heat treatment, precision machining,, drilling collar installation holes, protective welding, and warehousing;

Shaft: cutting, rough turning, drilling oil holes, heat treatment, precision grinding, and warehousing;Assembly process: cleaning and polishing, assembly, pressure testing, refueling, painting, packaging and warehousing.

Each process undergoes strict inspection, with independent processing workshops and precision instruments, including specialized magnetic particle inspection machines to ensure that there are no cracks in the roller shell and the overall quality of the carrier roller.

Part number

The carrier rollers are divided into different specifications and sizes, and are used in different models of tracked construction machinery chassis.

CATALOGUE
PC20PC30PC40PC55PC60-1PC60-5PC60-6
PC71PC100-5PC120-5PC200-5PC220PC300-5PC400-5
DH50DH55DH80DH130DH220DH250DH258
DH300DH500DX30DX35DX55-9DX60DX80
E305-5E305E307E35BE45E50BE70B
E300E110E120BE135E140E311E312
EX30EX50EX55EX60EX60-2EX70EX70DF
EX100EX120EX100MEX150EX200-1EX200-2EX200-5/6
HD140HD250HD400-1HD420-2HD450HD550HD700
HD820HD1250-5/7HD2045HD820HD1250-5/7ZN75ZN160
R35R50R55R60-5R60-7R80-7R130
R210R220-9R260R290R305R320R335
SK04SK042SK045SK30SK35SK35SRSK40
SK50SK55SK60SK60-5SK100SK120SK140
EC55EC210EC290EC360PH7035PH7045DRISOR
YC85SH60SH120SH200ZBC60NF130BF200
SW50SW70R914KX50JD350JD45083765
D20D30D50D65D65EX-12D85D155
D355D51EXD61EXD155CX55CX75JS14
D3CD4DD5D6DD7GD10ND11N
洋马35洋马55洋马75U15U35U60U15
KX91-3VIO17HCR1500TMX20GM80厦工806191936
Z001S004DH508DSR200SC650U30-2HDQ306HQ307

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