(KM1743,208300210,208300230)Komatsu PC400 track roller/OEM quality/China track roller manufacture
Product Specifications
(KM1743,208300210,208300230)Komatsu PC400 track roller
A PC400 Track Roller is a critical undercarriage component for Komatsu PC400 excavators (including PC400-6, PC400-7, PC400-8, and PC400LC models). It supports the machine’s weight, guides the track chain, and absorbs shocks during operation. Here’s a detailed breakdown:
1. Function & Importance
Purpose:
Supports the excavator’s weight and distributes load across the track.
Maintains track alignment and reduces friction between the track chain and frame.
Failure Impact:
Worn rollers cause uneven track wear, reduced mobility, and damage to other undercarriage parts (idlers, sprockets).
Purpose:
Supports the excavator’s weight and distributes load across the track.
Maintains track alignment and reduces friction between the track chain and frame.
Failure Impact:
Worn rollers cause uneven track wear, reduced mobility, and damage to other undercarriage parts (idlers, sprockets).
2. Key Specifications
Parameter OEM (Komatsu) Aftermarket (e.g., Berco/ITR) Part Number KM1743,208300210 BER-PC400-TR01 / ITR-400TKMaterial Forged SCr440 steel 42CrMo alloy steel Weight ~40 kg 38-45 kg Load Capacity 12,000 kg (static) 10,000-13,000 kg Bearing Type Tapered roller bearing Double-sealed ball bearing Seal System Labyrinth + lip seal Triple-lip + dust seal
| Parameter | OEM (Komatsu) | Aftermarket (e.g., Berco/ITR) |
|---|---|---|
| Part Number | KM1743,208300210 | BER-PC400-TR01 / ITR-400TK |
| Material | Forged SCr440 steel | 42CrMo alloy steel |
| Weight | ~40 kg | 38-45 kg |
| Load Capacity | 12,000 kg (static) | 10,000-13,000 kg |
| Bearing Type | Tapered roller bearing | Double-sealed ball bearing |
| Seal System | Labyrinth + lip seal | Triple-lip + dust seal |
3. Compatibility
Fits Models:
Komatsu PC400-6, PC400-7, PC400-8, PC400LC (long carriage).
Note: PC400-5 uses different rollers (verify serial number).
Interchangeability:
Some aftermarket rollers cross-fit CAT 330 or Hitachi ZX400 (check dimensions).
Fits Models:
Komatsu PC400-6, PC400-7, PC400-8, PC400LC (long carriage).
Note: PC400-5 uses different rollers (verify serial number).
Interchangeability:
Some aftermarket rollers cross-fit CAT 330 or Hitachi ZX400 (check dimensions).
4. Wear Indicators & Lifespan
Inspection Points:
Flange thickness: Replace if <15mm (original: 25mm).
Bearing play: >1.5mm radial movement = failure.
Grease leaks: Damaged seals allow dirt ingress.
Lifespan:
OEM: 8,000–10,000 hours (normal conditions).
Aftermarket: 6,000–8,000 hours.
*Mining/abrasive environments reduce life by 30–50%.*
Inspection Points:
Flange thickness: Replace if <15mm (original: 25mm).
Bearing play: >1.5mm radial movement = failure.
Grease leaks: Damaged seals allow dirt ingress.
Lifespan:
OEM: 8,000–10,000 hours (normal conditions).
Aftermarket: 6,000–8,000 hours.
*Mining/abrasive environments reduce life by 30–50%.*
5. Replacement Guide
Tools Needed:
Hydraulic jack (5-ton capacity).
Impact wrench (for M16 bolts).
Track press (if removing track chain).
Steps:
Release track tension via grease cylinder.
Remove track chain (if necessary).
Unbolt old roller (torque: 180–200 Nm).
Install new roller with anti-seize compound.
Torque Specs:
Bolts: 200 Nm (use thread locker).
Tools Needed:
Hydraulic jack (5-ton capacity).
Impact wrench (for M16 bolts).
Track press (if removing track chain).
Steps:
Release track tension via grease cylinder.
Remove track chain (if necessary).
Unbolt old roller (torque: 180–200 Nm).
Install new roller with anti-seize compound.
Torque Specs:
Bolts: 200 Nm (use thread locker).
6. OEM vs. Aftermarket Comparison
Factor OEM (Komatsu) Aftermarket Price 800 per roller 600 per roller Quality High-grade steel Varies (Berco ≈ OEM) Availability Longer lead times Faster shipping Warranty 12 months 6–12 months
| Factor | OEM (Komatsu) | Aftermarket |
|---|---|---|
| Price | 800 per roller | 600 per roller |
| Quality | High-grade steel | Varies (Berco ≈ OEM) |
| Availability | Longer lead times | Faster shipping |
| Warranty | 12 months | 6–12 months |
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