Komatsu Excavator Spare Parts Arm Boom Bucket Hydraulic Cylinder
Hydraulic cylinders that are used on construction equipment must be rugged and reliable. They will experience a lifetime exposed to heavy use in a harsh environment. Failure in service will result in costly downtime, project delays and maintenance headaches.
These cylinders must be designed to withstand the following:
Temperature Extremes -winter cold and summer heat.
Abrasives - dirt, grit and dust.
Corrosive Environments - rain and salt.
Work Load - heavy continual use.
Contamination - asphalt and cement splatter.
1. Rod seal:superior quality named-brand seals improve a longer life and seal effect polyurethane U-packing rod seals/buffer seals · bonded-to-metal wiper seals custom seals available
2.: Skived&burnished or vertical honing tube assures the concentricity and straightness
3. Bushing:Hardened steel bushing or copper bushing
4. Eye:All eyes are made of forged high strenght steel improve cylinder not only in appearance but in mechanical performance
5. Rod:Induction hardened prior to chrome plating enhances the surface hardness,enhanced chrome plating improve corrosion resistence and anti-scratch performance
6. Piston:High pressure piston sealing material:teflon or nylon seals.High precision machining maximize the consistency of parts.
7. Cap:All caps are made of forged high strength steel
Technology
* Skive Roller Burnishing Machines
* Vertical Honing machine
* Mchining Centers
* CNC Lathes
* Automatic Welding Machines
* Grinders
* Polishing machine
* Cylinder Assembly Benches
* Cylinder Test Benches
* Spray room
Process flow
Materials feeling → Tempering → Cylindrical lathe cutting → High-frequency quenching → Cylindrical grinding → Hard chrome plating → External grinding
After tempering and surface high-frequency quenching,external surface hard chrome
piating, make it hard both internal and external with smooth surface.
Piston rod: Adopt high precision mirror polishing
| Material | 45# high grade carbon steel or 40CR |
| Tempering hardness | HB240-260 |
| The depth of the high frequency | 2mm-3mm |
| High frequency hardness | HRC55°±2° |
| Chrome plating thickness | 0.03mm-0.06mm |
| Chromium layer hardness | HV800-1000vpn |
| Straightness | ≤0.08mm/m |
| Surface roughness | Ra0.03um- Ra0.06um |
| Outside diameter tolerance | f7 |
Hydraulic Cylinder Tube: Using imported equipment rolling machine
Kind of steel |
45# |
Tensile strength N/mm |
≥647 |
Linearity |
0.3-1/1000 |
Specific elongation |
≥4 |
Precision of size |
HB |
207 |
|
Roughness of inner hole |
0.4-0.8 |
| BRAND |
|
|||||||
| KOMATSU | PC30 | PC40 | PC45 | PC60 | PC75 | PC100 | PC120 | PC200 |
| EXCAVATOR | PC220 | PC300 | PC350 | PC400 | ||||
| Cat | E70B | E110 | E120 | E200B | E307 | E311 | E312 | E320 |
| EXCAVATOR | E322 | E325 | E300B | E330 | ||||
| KOMATSU | D20 | D21 | D30 | D31 | D37 | D40 | D50 | D60 |
| BULLDOZER | D63 | D65 | D80 | D85 | D135 | D155 | D355 | D375 |
| Cat | D3C | D3D | D4 | D4C | D4D | D4E | D5 | D5H |
| BULLDOZER | D6 | D6C | D6D | D6H | D7E | D7G | D8N | D9N |
| HITACHI | EX30 | EX40 | EX60 | EX100 | EX120 | EX200 | EX220 | EX300 |
| EX400 | ZAX200 | ZX330 | ZX350 | UH07 | UH081 | UH083 | ||
| DAEWOO | DH55 | DH200 | DH220 | DH280 | DH300 | DH320 | ||
| HYUNDAI | R110 | R130 | R150 | R200 | R210 | R250 | R290 | |
| KEBELCO | SK60 | SK100 | SK120 | SK200 | SK220 | SK300 | K904 | K907 |
| MITSUBISHI | MS110 | MS120 | MS140 | MS180 | ||||
| KATO | HD140 | HD250 | HD400 | HD550 | HD700 | HD850 | HD900 | HD1220 |
| SAMSUNG H.I. | MX8 | SE200 | SE210 | SE280 | MX292 | SE350 | ||
| SUMITOMO | SH70 | SH100 | SH120 | SH160 | SH200 | SH280 | SH300 | SH340 |
FQA
1. ARE YOU A FACTORY OR TRADING COMPANY?
We are a factory based in Guangzhou, China. And we've gained the export certification. Feel free to let our sales know ahead, if you planed for paying a visit to our factory.
2. DO YOU ACCPET OEM? WHAT'S YOUR MOQ? ANY EXPERIENCE FOR OEM?
We accept OEM for every product that we produce; There is no MOQ for any of our product if you wanted a OEM; We've been doing OEM ever since the year we established our factory, which is 2010
3. IS YOUR DELIVERY ALWAYS ON TIME?
We can't promise about the freight but what we can do is shortening our lead time while keep the same quality level. So there will not be any problem even if the sea freight delay for a couple days.
4. WHY DON'T YOU HAVE A CE CERTIFICATIONS?
Ce certification is for one product, not the whole factory, and we have way too many product lines to registered CE for, but our customers from Europe said it's easy to solve the CE problem. And we are working on the CE certifications registration process, in order to save our customers' time in the furture.
5. HOW AM I START ORDERING?
First, talk to our sales about your machine medel, working conditions, special needs, deadlines. Then, our sales will provide the details you need. All inquiry will be responed within 24 Hours.
6. CAN YOU KEEP ME UPDATE ABOUT MY ORDERS' PRODUCTION PROCESS?
Of course, unlike others who might hide their production process, our production process are totally open for our customers. Feel free to inform our sales about your needs.
Tag: hydraulic cylinder
Our products are sold all over the world, you can rest assured.
