| Paramete | Specification | Testing Standard |
|---|---|---|
| System Operating Pressure | 35 MPa (5,076 PSI) | ISO 10766 |
| Peak Pressure Handling | 52 MPa (7,542 PSI) transient | ISO 10767-1 |
| Temperature Range | -40°C to +125°C (-40°F to +257°F) | ASTM D2000 |
| Seal Material Density | 1.30-1.38 g/cm³ | ASTM D792 |
| Compression Set | ≤ 10% (70 hours @ 125°C) | ASTM D395 Method B |
| Tensile Strength | ≥ 20 MPa (2,900 PSI) | ASTM D412 |
| Elongation at Break | ≥ 280% | ASTM D412 |
| Tear Strength | ≥ 40 kN/m | ASTM D624 Die C |
| Volume Swell | ≤ 7% in AW46 hydraulic oil (168 hrs @ 100°C) | ASTM D471 |
| Friction Coefficient | 0.10-0.18 (dynamic) | ASTM D1894 modified |
| Thermal Conductivity | 0.30 W/m·K | ASTM E1225 |
| Specific Heat Capacity | 1.85 kJ/kg·K | ASTM E1269 |
| Permeability Rate | ≤ 0.5 g·mm/m²·day·MPa | ASTM F1249 |
| Component Group | COGENG Sub-Kit Code | Primary Material | Hardness (Shore A) | Color Code | Components Included |
|---|---|---|---|---|---|
| Boom Cylinder Kit | CG-BCK-23910-01 | HNBR with Aramax™ | 90 ± 2 | Blue | Piston seals (2), rod seals (2), wipers (2), wear bands (4), O-rings (8), backup rings (4) |
| Arm Cylinder Kit | CG-ACK-23910-01 | Polyurethane (AU) | 92 ± 3 | Red | Piston seals (2), rod seals (2), wipers (2), wear bands (4), O-rings (8), cushion seals (2) |
| Bucket Cylinder Kit | CG-BKT-23910-01 | HNBR/PTFE Composite | 88 ± 2 | Yellow | Piston seals (2), rod seals (2), wipers (2), wear bands (4), O-rings (8), scraper rings (2) |
| Common Parts Kit | CG-CPK-23910-01 | Mixed Polymers | Various | Green | Port seals (12), breather seals (4), gland gaskets (6), shim kits (3 sets) |
| Accessory Kit | CG-AK-23910-01 | N/A | N/A | White | Installation tools (3), lubricant (100ml), gloves, wipes, QR manual |
| Critical Component | Technical Specification | Performance Feature |
|---|---|---|
| Pressure-Adaptive Piston Seal | HNBR with embedded sensor layer | Changes color at 90% wear life |
| Multi-Stage Rod Seal | Triple-lip PU/FKM/HNBR composite | Handles pressure to 45 MPa |
| Thermal-Regulating Wear Band | Graphite-bronze-PTFE matrix | Maintains 0.08 friction from -20°C to 100°C |
| Contaminant-Lock Wiper | PU with magnetic particle trap | Captures ferrous particles >5µm |
| Zero-Leak Gland Seal | HNBR with helical spring | Maintains seal at zero pressure |
| Excavator Model | Serial Number Range | Boom Cylinder Kit | Arm Cylinder Kit | Bucket Cylinder Kit | Additional Notes |
|---|---|---|---|---|---|
| PC300-6 | 30001-45000 | CG-BCK-23910-01A | CG-ACK-23910-01A | CG-BKT-23910-01A | Standard configuration |
| PC300-7 | 5001-12000 | CG-BCK-23910-01B | CG-ACK-23910-01B | CG-BKT-23910-01B | Updated gland design |
| PC300-8 | 2001-8000 | CG-BCK-23910-01C | CG-ACK-23910-01C | CG-BKT-23910-01C | High-pressure variant |
| PC300LC-6 | 30001-48000 | CG-BCK-23910-01A | CG-ACK-23910-01A | CG-BKT-23910-01A | Same as PC300-6 |
| PC300LC-7 | 5001-12500 | CG-BCK-23910-01B | CG-ACK-23910-01B | CG-BKT-23910-01B | Same as PC300-7 |
| PC350-6 | 10001-25000 | CG-BCK-23910-02A | CG-ACK-23910-02A | CG-BKT-23910-02A | Larger bore sizes |
| PC350-7 | 2001-7000 | CG-BCK-23910-02B | CG-ACK-23910-02B | CG-BKT-23910-02B | Updated 2015+ |
| PC400-6 | 8001-18000 | CG-BCK-23910-03A | CG-ACK-23910-03A | CG-BKT-23910-03A | Mining configuration |
| PC400-7 | 1001-5000 | CG-BCK-23910-03B | CG-ACK-23910-03B | CG-BKT-23910-03B | Latest generation |
Special Variants Table
| Special Application | Kit Modification Required | Additional Components |
|---|---|---|
| Demolition Models | CG-BCK-23910-01D (reinforced) | Shock absorbers (2), extra wipers |
| Long-Reach Config | CG-ACK-23910-01E (extended) | Longer wear bands, special guides |
| Cold Climate (-40°C) | All kits with "F" suffix | Low-temp compounds, special lubricant |
| Mining Application | All kits with "M" suffix | Abrasion-resistant coatings |
| NO | Number | Name | Qty |
| 707-99-23910 | SERVICE KIT | 2 | |
| G-1 | 707-00-XA012 | CYLINDER GROUP,L.H. | 1 |
| G-2 | 707-00-XA022 | CYLINDER GROUP,R.H. | 1 |
| 707-00-0A012 | CYLINDER ASS'Y,L.H. | 1 | |
| 707-00-0A022 | CYLINDER ASS'Y,R.H. | 1 | |
| 1 | 707-11-85251 | • CYLINDER,L.H. | 1 |
| 707-11-85261 | • CYLINDER,R.H. | 1 | |
| 2 | 02896-11012 | • O-RING (KIT) | 1 |
| 3 | 07143-10405 | • BUSHING | 1 |
| 4 | 07145-00045 | • SEAL,DUST (KIT) | 2 |
| 5 | 707-29-85550 | • HEAD,CYLINDER | 1 |
| 6 | 707-52-90150 | • BUSHING | 1 |
| 7 | 707-51-40030 | • PACKING,ROD (KIT) | 1 |
| 8 | 707-51-40640 | • RING,BUFFER (KIT) | 1 |
| 9 | 707-56-40580 | • SEAL,DUST (KIT) | 1 |
| 10 | 07179-12052 | • RING,SNAP | 1 |
| 11 | 07000-12080 | • O-RING (KIT) | 1 |
| 12 | 707-35-52770 | • RING,BACK-UP (KIT) | 1 |
| 13 | 07000-12085 | • O-RING (KIT) | 1 |
| 14 | 721-58-40940 | • ROD,PISTON | 1 |
| 15 | 07143-10405 | • BUSHING | 1 |
| 16 | 07145-00045 | • SEAL,DUST (KIT) | 2 |
| 17 | 707-36-85070 | • PISTON | 1 |
| 18 | 707-44-85180 | • RING,PISTON (KIT) | 1 |
| 19 | 707-39-85120 | • RING,WEAR (KIT) | 1 |
| 20 | 707-67-30030 | • NUT | 1 |
| 21 | 20U-62-41620 | ELBOW | 1 |
| 22 | 07002-11823 | O-RING (KIT) | 1 |
| 23 | 02896-11012 | O-RING (KIT) | 1 |
Workspace Certification:
Cleanroom Class ISO 14644-1 Class 8 minimum
Positive air pressure maintained
Humidity controlled to 40-60% RH
Equipment Preparation:
Complete hydraulic system flush (ISO 4406 16/14/11 to 14/12/9)
Cylinder disassembly station with 2-ton capacity
Precision measuring tools (micrometers 0-150mm, 0.001mm resolution)
Safety Protocols:
Lockout/tagout verified by two technicians
Pressure relief valves tested and calibrated
Personal protective equipment: ANSI Z87.1 eye protection, cut-resistant gloves
Component Inspection (per SAE J1179):
Cylinder bore: Max taper 0.025mm, max ovality 0.015mm
Piston rod: Straightness ≤0.05mm/500mm, chrome intact ≥0.08mm
Record measurements on COGENG Form CG-F23910
Surface Preparation:
Polishing: Use only 400-grit or finer abrasive
Cleaning: Three-stage solvent wash (aliphatic, alcohol, deionized water)
Drying: Compressed air filtered to 0.1µm
Contact COGENG
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