277-8667 Tension Idler Assembly
This is the aftermarket idler for the Caterpillar 307 B~D and 308 B~D mini excavator. This idler is guaranteed to fit so order online with confidence.
This idler also fits the following models:
- Caterpillar 307B (BNE BCM BAJ 4RW 5CW 6KZ 7DZ)
- Caterpillar 307C (BNE BCM BAJ 4RW 5CW 6KZ 7DZ)Must Verify Serial, Alt. Option: 185-9162
- Caterpillar 307D (CRW JPS HAS GBT FYC ECT DSG 3YS)
- Caterpillar 307E
- Caterpillar 307E2
- Caterpillar 307CSB
- Caterpillar 308B (CRW JPS HAS GBT FYC ECT DSG 3YS)
- Caterpillar 308C (CRW JPS HAS GBT FYC ECT DSG 3YS)
- Caterpillar 308 CCR Must Verify Serial, Alt. Option: 185-9162
- Caterpillar 308D (CRW JPS HAS GBT FYC ECT DSG 3YS)
The 277-8667 Caterpillar Idler is designed for the Caterpillar 307 B~D and 308 B~D mini excavators. Here are some key features and specifications of this idler:
Key Features
- Aftermarket Compatibility: This idler is an aftermarket part that guarantees a perfect fit for the Caterpillar 307 B~D and 308 B~D models.
- Direct Fit: Engineered to align seamlessly with the existing components, ensuring easy installation without the need for modifications.
- Precision Engineering: Designed to promote smooth and consistent movement, enhancing the overall performance of the excavator.
- Weight: The idler typically weighs around 131 lbs (approximately 59.4 kg), making it robust yet manageable for installation.
Product Details
- Part Number: 277-8667
- Description: Caterpillar Idler
Application
- Designed for use in Caterpillar excavators (models 307 B, 307 D, 308 B, 308 D) to manage track tension and support the weight of the undercarriage.
Specifications
- Construction: Made from durable steel to withstand heavy loads and harsh operating conditions.
- Design: Typically features a robust design to ensure proper track alignment and tension.
- Bearings: Usually includes sealed bearings to reduce friction and enhance service life.
- Dimensions: Specific dimensions may vary; consult Caterpillar specifications for exact measurements.
Additional Information
- Installation: The idler is designed for straightforward installation, allowing operators to replace it quickly and efficiently.
- Durability: Built to withstand the rigors of excavation work, ensuring longevity and reliability in various working conditions.
If you have any more questions or need further details about the 277-8667 Caterpillar Idler, feel free to ask!
Undercarriage parts
The excavator undercarriage is the foundation that supports the entire machine, consisting of critical components such as track shoes, rollers, idlers, and sprockets that work together to provide traction, stability, and mobility. These durable parts are engineered to withstand the intense stresses and harsh operating conditions encountered during construction, demolition, and earthmoving tasks, and their proper maintenance and replacement are crucial for ensuring the excavator’s long-term performance and reliability. The undercarriage plays a vital role in the excavator’s overall capabilities, enabling it to traverse a wide range of terrains and job site conditions with confidence and efficiency.
Track roller diagram
| NOTE | No. | PART No. | QTY | PART NAME |
| 1 | 6Y-6201 | 1 | RIXG | |
| 2 | 5G-2247 | 1 | STOPPER | |
| 3 | 6Y-0473 | 1 | PLUG | |
| 4 | 6Y-1054 | 2 | COLLAR | |
| 5 | 6I-9398 | 1 | ROLLER AS | |
| 6 | 6I-9399 | 2 | BEARING | |
| 7 | 1H-8720 | 2 | SEAL | |
| 8 | 6I-9397 | 1 | SHAFT | |
| 9 | 9W-2204 | 1 | PIN | |
| 10 | 9W-7225 | 2 | SEAL GP |
