Track Roller Earthmoving Spare Parts HITACHI EX55 Crawler Crane Undercarriage Parts
1. Appliion
The components of the undercarriage include sprockets, idlers, track rollers, carrier rollers, and track pads. These parts directly influence the operational efficiency and performance of excavators and bulldozers. Together, their weight and manufacturing expenses constitute approximately a quarter of the total manufacturing cost of a complete excavator.
2. Differences between Friction-welding and Traditional Type
* Friction-welding track roller is better in the wear resistance and has a longer working lifetime.
* Consumption of raw material: the roller bodies of traditional track rollers are connected by the welding rod. but the friction ones are connected by the friction between rollers' bodies. So the friction-welding roller will be added to more raw material to make sure the roller is perfect to the standard size after welding.
* Inner parts: For the traditional rollers, the welding is done after two processes of machining, so the size of the inner parts is not so precise as friction-welding ones. For the friction-welding ones, after the welding, there is one more precise machining with concentric loing to make sure the conformity of inner size, this means the inner parts are more precise with a higher standard.
3. Production Processes
4. Track Roller Structure
5. Design/Structure/Main Dimensions of Installation
MAIN PARAMETERS
| Brand | Model | Main Dimensions of Installation |
| A | B | E | G | M | L |
| HITACHI | EX30 | 108 | 85 | 112 | 172 | | |
| EX60-1 | 145 | 120 | 152 | 248 | 218 | 15 |
| EX60-2/3 | 145 | 120 | 152 | 248 | 216 | 15 |
| EX60-5 | 135 | 112 | 140 | 227 | 197 | 15 |
| EX100 | 160 | 135 | 184 | 285 | 250 | 17.5 |
| EX120 | 160 | 135 | 184 | 285 | 250 | 17.5 |
| EX150-1 | 170 | 140 | 200 | 304 | 267 | 17 |
| EX200-1 | 185 | 180 | 220 | 356 | 318 | 18 |
| EX200-2 | 185 | 150 | 218 | 330 | 290 | 19 |
| EX200-2B | 195 | 160 | 218 | 330 | 290 | 19 |
| EX220-1 | 195 | 160 | 218 | 360 | 325.4 | 17 |
| EX270-1 | 215 | 180 | 256 | 410 | 368 | 21.5 |
| EX300-2/3 | 215 | 180 | 256 | 410 | 368 | 21.5 |
| EX355 | 215 | 180 | 256 | 410 | 368 | 21.5 |
| EX400-3/5 | 215 | 180 | 256 | 410 | 368 | 23.5 |
| EX450-5 | 240 | 200 | 284 | 447 | 400 | 23.5 |
| UH052 | 170 | 140 | 200 | 304 | 267 | 17 |
| UH07 | 185 | 150 | 220 | 356 | 318 | 18 |
| UH083 | 170 | 140 | 200 | 304 | 267 | 17 |
The models above are just for reference, many models we can't list here. we can supply more products as your requirement. Please feel free to send us your inquiry or email if you have any requirements.
6. Our Advantages
* World-class quality
* Factory sale directly with reasonable price
* 35 years' experience in Excavator & Bulldozer spare parts manufacturing
* Flexible payment terms including T/T, L/C and so on
* Fast delivery within 30 days after contract established
* Professional sales team, quality inspection, and report, maritime logistics guidance
* After-sale services: video technical support,24h online support
7. Hot Sale Products
Product Tags:
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EX55 Bottom Track Rollers For Crawler Machine Top Roller for Excavator Bottom RLR Images
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