Product Description
Caterpillar Excavator Hydraulic Cylinder | Boom / Stick / Bucket RAM Replacement Parts for CAT312CL CAT320B/C/D/E,CAT330DL,CAT345DL
Premium hydraulic boom cylinder, designed specifically as reliable Caterpillar crawler excavator spare parts. Manufactured to strict OEM production standards, this boom lift cylinder delivers powerful lifting performance and structural resilience under the most punishing working environments.Premium Wearable Material: Crafted from high-quality 40Cr steel purchased directly from first-class steel plants.Advanced Heat Treatment: Forged, cast, machined, and heat-treated to ensure deep structural hardening.Superior Surface Hardness: Features a surface hardness rating of HRC44-52 with a hardened depth of 8mm-12mm.Optimized Smooth Finish: Precision-engineered with a smooth outer surface.Perfect for earthmoving, large-scale mining, road construction, urban infrastructure, and demanding agricultural operations.
Compatible CAT Excavator Models
Features
Application
- Heavy Machinery: Ideal for Caterpillar crawler excavators, bulldozers, and heavy-duty lift systems.
- Road Works: Road construction, infrastructure building, and kerbside infrastructure layout maintenance.
- Earthmoving: Heavy digging, deep trenching, land grading, and general earthmoving operations.
- Harsh Environments: High-impact heavy construction, aggressive quarrying, and demanding mining projects.
Product Parameters
|
Name |
Caterpillar crawler excavator spare parts boom cylinder,arm cylinder and bucket cylinder |
|
Material |
40Cr steel purchased from first class steel plant |
| Process |
Forging&Casting,Machining,Heat Treatment |
| Painting Color | Black or Yellow or as customers' request |
| Finish |
Smooth |
| Surface Hardness |
HRC44-52, Depth:8mm-12mm |
| Quality Guarantee |
One year |
| Delivery Time |
Within 10--20 days after sales contract establishment |
| Payment Terms | TT, L/C, Paypal, Western union,D/P |
|
Usage |
Mining &Construction &Road &Agricuture &Earth moving |
Why Choose us?
| Machine Model | Part Number | Cylinder Name | Application Description |
|---|---|---|---|
| Caterpillar | |||
| CAT 320D / 320DL / 323D | 158-9058 | Boom Cylinder Assy | Standard earthmoving main arm cylinder |
| 242-6734 | Stick Cylinder Assy | Dipper arm hydraulic ram | |
| 242-6756 | Bucket Cylinder Assy | Bucket tilt hydraulic cylinder | |
| CAT 330D / 336D | 234-4601 | Stick Cylinder Assy | Medium-large excavator dipper cylinder |
| 266-8077 | Boom Cylinder Assy | Heavy-duty boom hydraulic cylinder | |
| 283-6188 | Bucket Cylinder Assy | Rock excavation bucket tilt cylinder | |
| CAT E345B / 345D | 129-7831 | Arm Stick Cylinder | Large mining excavator dipper ram |
| CAT 312A / 315A / 317A | 5I-8780 | Boom Cylinder Assy | Mini & small excavator main arm cylinder |
| CAT D6R / D6N | 127-8932 | Blade Lift Cylinder Assy | D6 series dozer blade lifting ram |
| CAT D8N | 9T-0140 | Blade Lift Cylinder Assy | Heavy dozer main lift hydraulic cylinder |
| 6E-1102 | Blade Angle Cylinder Assy | Blade side angle adjustment cylinder | |
| CAT D9N / D9L | 9T-2860 | Lift Cylinder Assy | Large mining dozer blade lift ram |
| CAT D10N | 9J-5868 | Blade Lift Cylinder Assy | Ultra-heavy mining bulldozer cylinder |
| CAT 140H Motor Grader | 173-5981 | Lift Cylinder GP | Grader blade lift hydraulic cylinder |
| Komatsu | |||
| PC200-7 / PC200-8 / PC220-8 | 20Y-30-32130 | Boom Cylinder Assembly | 20-ton standard excavator boom ram |
| 20Y-30-42120 | Stick Arm Cylinder Assy | Dipper hydraulic cylinder for digging | |
| 20Y-30-47120 | Bucket Tilt Cylinder Assy | Bucket swing hydraulic ram | |
| PC300-8 / PC360-8 | 707-01-XY020 | Boom Cylinder Assy | 30-ton heavy construction boom cylinder |
| 707-01-XY030 | Stick Cylinder Assy | Rock & quarry dipper arm cylinder | |
| PC400-8 / PC450-10 | 707-01-0A510 | Bucket Cylinder Assy | Large mining excavator bucket ram |
| PC750-7 / PC800-8 | 707-99-77300 | Boom Cylinder Seal Kit | Matching repair kit for heavy boom cylinder |
| D65A-8 / D65PX-12 | 144-63-13320 | Blade Lift Cylinder Rod | Lift cylinder piston rod assembly |
| 144-78-17111 | Complete Lift Cylinder Assy | D65 dozer blade lifting hydraulic ram | |
| D85A-21 / D155AX-6 | 154-63-12604 | Left Lift Cylinder Assy LH | Left side blade lift cylinder |
| 154-63-12704 | Right Lift Cylinder Assy RH | Right side blade lift cylinder | |
| 154-63-12530 | Cylinder Rod Assy | Piston rod for D85 lift ram | |
| D375A-5 / D375A-6 | 195-63-11110 | Blade Angle Cylinder | Mining dozer blade angle adjust cylinder |
Production Show
Caterpillar excavator hydraulic boom cylinder,stick and arm cylinder and bucket cylinder inner structure
FAQ
What materials and treatments ensure the durability of your excavator cylinders?
Our boom, arm, and bucket cylinders are manufactured from premium wearable 40Cr steel from first-class steel plants. Through precise forging, casting, machining, and advanced heat treatment, they achieve a surface hardness of HRC44-52 and a depth of 8mm-12mm. This heavy-duty engineering ensures a maximized lifespan for demanding mining and construction applications.
Do you support custom manufacturing and OEM quality standards?
Yes. We manufacture strictly to OEM standards and our quality control is certified by ISO9001. Every hydraulic cylinder undergoes rigorous hardness testing, dimensional inspection, and visual checks before delivery. We can produce custom replacement parts perfectly matching your samples, designs, or drawings, with custom smooth finishes in yellow or black.
What are your factory's delivery times, packaging, and payment terms?
We guarantee fast production and delivery within 10-20 days after contract establishment. For safe international transit, all excavator spare parts are secured in standard fumigated seaworthy export packaging. We support flexible global transaction methods including T/T, L/C, PayPal, Western Union, and D/P.
