• CAT EXCAVATOR ROLLERS 302.5C 303CCR 266-8793

CAT EXCAVATOR ROLLERS 302.5C 303CCR 266-8793, Track Roller CATERPILLAR Friction Welding Bottom Track Roller, Caterpillar Dozer Excavator Track Rollers, Dozer Undercarriage Parts, flanged track roller, bulldozer track rollers, Replacement Cat style Roller Carrier, Undercarriage Parts, OEM Earthmoving Spare Parts Bottom Roller Track Rollers for Caterpillar D20 supplier from China

CAT EXCAVATOR ROLLERS 302.5C 303CCR 266-8793 Detail Information

Machine CAT
Model 302.5C
Product Bottom / Track Roller
Quantity Per Machine 6
Weight 6kg
Part Number 266-8793

Material:50Mn Steel
Quality:Heat Treatment HRC 40-55
Color:Black Or Yellow
Warranty Time:12-18 Months
Shipment:By Air, Ship
Package:Export Packaging
High Light:flanged track roller, bulldozer track rollers

This is the aftermarket bottom roller for the following Caterpillar® mini excavators:
Cat 302.5C
Cat 303 CCR
Cat 303ECR
Cat 303.5C
Cat 303.5CCR
Cat 303.5D
Cat 303.5DCR
Cat 303.5E
Cat 303.5ECR
Cat 303.5E2CR
Cat 304DCR
Cat 304E
Cat 304ECR
Cat 304E2CR

This roller comes with a twelve month prorated warranty so you can shop online with confidence. We offer same day shipping at no extra charge. These Caterpillar® track rollers do not come with the bolts required for installation.

This roller is known to fit serials: GBB3399- above.

Alternate Part Number:
Caterpillar dealer part number: 266-8793

Alternate Models:
Caterpillar: All Above Models

Alternate Part: This roller is known to fit serials: GBB3399- above.
Cat 303C-CR Sprockets 264-5371
Cat 303C-CR Rollers 266-8793
Cat 303C-CR Top Rollers 266-8794
Cat 303C-CR Idlers 267-4829
Sprockets 140-4022
Top Rollers 146-6064
Idlers 234-6204
Bottom Rollers 266-8793
Rubber Tracks

This maintenance free Bottom Roller was made of the highest quality hardened steel with sealed bearings to protect them from foreign debris, manufactured to exact OEM specs providing you dependable service while operating in the most extreme conditions.

The HCE PARTS undercarriage product line serves both the heavy equipment and industrial markets with rubber track machinery such as Excavators, Mini Excavators, Compact Track Loaders, Mini Skid Steers, and Mini Dozers. We offer one of the most dependable complete range of Rollers, Drive Sprockets, and Idler Wheels in the industry.

Track rollers
Track rollers /386-0791/ are an essential part of the overall undercarriage system as they carry a whole host of tracked machines. The size of the rollers is selected so that the machine can work without any problems in normal working mode. And the temperature resulting from prolonged loading is safely removed from all components (bearings, seals, etc.).  Bottom Track Roller for CAT Excavator 302.4D

The maximum resistance to abrasion of the rollers is achieved thanks to appropriate castings, precise machining and induction hardening. Moreover, good parameters are obtained thanks to tempering, increasing durability and extending the life of the rollers through their even wear.

Rollers failures
Premature failure of the rollers /386-0791/ may be caused by their uneven load. E.g. when working with rollers that are worn to varying degrees (when they were not completely replaced during repair work). CAT Track Roller 301.7D (381-3040)

What’s more, the rollers also degrade when driving at higher speeds for longer. Then there are leaks, from which oil leaks, which leads to incorrect lubrication of the bearings, and this leads to failure of the rollers. If the track rollers lack the right amount of oil, the bearings get stuck and are not able to rotate around their axis inside the roller. As a result they are seriously damaged.  Bottom Roller For CAT  CAT Excavator Bottom Roller 302.4D, 386-0791

Track rollers /386-0791/ with leaking or blocked bearings should be replaced immediately to prevent damage to other track components, such as the link chain, because non-rotating rollers lead to rapid wear of the track chains. This is due to an increase in the frictional force on the roller shell and the contact surface of the chains.

  • Affordable Price
  • OEM Parts Available
  • Payment Easy
  • Worldwide Delivery
  • Quality Guaranteed
  • Bulk Discount

Product Range

Brand Model Main Dimensions of Installation
Bulldozer Series D20 155 135 130 264 194 15
D3C 178 152 155 274 230.5 13.5
D30 198 170 154 285 240 17.5
D31 198 170 154 285 240 17.5
D4 230/219 203 174 358.5 298 17
D4D 230/219 203 174 358.5 298 17
D5 233 204 208 369 317.5 17
D6D 246 210 228 400 330.5 20.5
D7 256 222 248 439.5 368.3 20
D7G 256 222 248 439.5 368 245
D8K 300 280 296 533.6 428.6 27
D40 233 204 208 308 310 18
D50 233 204 208 380 310 18
D60 245 210 235 394 320 19
D65 245 210 235 394 320 19
D80 258 220 252 452 380 23.5
D85 258 220 252 452 380 23.5
D155 296 258 292 498 408 26
300907 188 162 138.5 242 212 13
ECM440 188 162 138.5 242 212 13.5
T90 2160 185 213 351.4 298 18
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