A&S Construction Machinery Co., Ltd. supplies all types of joysticks. All the brands of joysticks we can provide: CAT joysticks, KOMATSU joysticks, JOHN DEERE joysticks, SANY joysticks, XCMG joysticks, VOLVO joysticks, HITACHI joysticks, SUMITOMO joysticks, LIEBHERR joysticks, DOOSAN joysticks, CASE joysticks, BOBCAT joysticks, KUBOTA joysticks, YANMAR joysticks, HYUNDAI joysticks, DAEWOO joysticks, etc.. For other parts of the brands above we can also provide cylinder liners, crankshafts, oil pumps, solenoid valves, solenoid coils, fuel injectors, batteries, radiators, compressors, gaskets and seals, mufflers, manifolds, turbochargers, hydraulic pumps, hydraulic motors, hydraulic valves, hydraulic couplers, bearings, reducers, bearing seats, gears, pulley, sprocket, coupling, drive shaft assembly, brakes, clutches, drive chains, actuators, alternators, cables, controllers, distributors, fuses and relays, harnesses, sensors, switches, gearcases, filters, counterweights, heater and A/C accessories, belts, etc..
A&S Construction Machinery Co., Ltd. supplies all types of hydraulic motors. All the brands of hydraulic motors we can provide: CAT hydraulic motors, KOMATSU hydraulic motors, JOHN DEERE hydraulic motors, SANY hydraulic motors, XCMG hydraulic motors, VOLVO hydraulic motors, HITACHI hydraulic motors, SUMITOMO hydraulic motors, LIEBHERR hydraulic motors, DOOSAN hydraulic motors, CASE hydraulic motors, BOBCAT hydraulic motors, KUBOTA hydraulic motors, YANMAR hydraulic motors, HYUNDAI hydraulic motors, DAEWOO hydraulic motors, etc. For other parts of the brands above we can also provide cylinder liners, crankshafts, oil pumps, solenoid valves, solenoid coils, fuel injectors, batteries, radiators, compressors, gaskets and seals, mufflers, manifolds, turbochargers, hydraulic pumps, hydraulic valves, hydraulic couplers, bearings, reducers, bearing seats, gears, pulley, sprocket, coupling, drive shaft assembly, brakes, clutches, drive chains, actuators, alternators, cables, controllers, distributors, fuses and relays, harnesses, sensors, switches, gearcases, filters, counterweights, heater and A/C accessories, belts, etc.
A&S Construction Machinery Co., Ltd. supplies all types of hydraulic pumps. All the brands of hydraulic pumps we can provide: CAT hydraulic pumps, KOMATSU hydraulic pumps, JOHN DEERE hydraulic pumps, SANY hydraulic pumps, XCMG hydraulic pumps, VOLVO hydraulic pumps, HITACHI hydraulic pumps, SUMITOMO hydraulic pumps, LIEBHERR hydraulic pumps, DOOSAN hydraulic pumps, CASE hydraulic pumps, BOBCAT hydraulic pumps, KUBOTA hydraulic pumps, YANMAR hydraulic pumps, HYUNDAI hydraulic pumps, DAEWOO hydraulic pumps, etc. For other parts of the brands above we can also provide cylinder liners, crankshafts, oil pumps, solenoid valves, solenoid coils, fuel injectors, batteries, radiators, compressors, gaskets and seals, mufflers, manifolds, turbochargers, hydraulic motors, hydraulic valves, hydraulic couplers, bearings, reducers, bearing seats, gears, pulley, sprocket, coupling, drive shaft assembly, brakes, clutches, drive chains, actuators, alternators, cables, controllers, distributors, fuses and relays, harnesses, sensors, switches, gearcases, filters, counterweights, heater and A/C accessories, belts, etc.
Middle excavator,Generator set, Mining machinery Special Characteristics For valve blank, Using shot blasting process after quenched-tempered, not only eliminates surface stress, but also improve fatigue resistance. Excavator intake valve for Caterpillar Technical parameter: Model Description Part number Material Size( ) Surface Characteristic Application Power-kw Guarantee D X d L 3306 INTAKE 6N9915 4Cr9Si2 51.3 60 9.5 136.4 chroming strengthen Middle excavator, Generator set, Mining machinery 110~130 100 000 km or 1 year EXHAUST 6N9916 21-4N+4Cr9Si2 48.2 60 ° 9.5 134.8 chroming strengthen Engine valve is the executive part of engine timing control of internal combustion engine, and it is the important parts which guarantee power performance, economic performance, reliability and durability of engine. Our Products Strength: 1.  High quality special valve bar material:  4Cr9Si2, 4Cr10Si2Mo, 21-4N, X60, X80, INCONEL751,21-4NWNb. 2.  Strict control process:  CNC processing line, network continuous furnace for heat treatment,welding of double matels, valve seat welding(STELI), U type quenching, chrome plating and soft nitriding on valve surface, 100% flaw detection for finish products. 3.  Quality certificate:  ISO9001, IATF16949 4.  Fast delivery capability:  for batch order, within 30 days 5.  Perfect service system:  professional engineer for solving variours problem in use. FAQ: How do you make our business long-term and good relationship? 1. We keep good quality and competitive price to ensure our customers benefit; 2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from. we are proessional Excavator intake valve Manufacturer Huacheng Automobile Accessories dedicated to produce Internal Combustion Engine Parts, Valve System, Piston, Timing Control, Timing Gear.
Year 2020 Other attributes Showroom Location United Kingdom, Nigeria, Peru, Spain, Canada, Chile, South Africa, USA, Turkey, United States, Japan Specifications: Operating Weight: 8 tons Bucket Capacity: 0.31 cubic meters Machine Weight: 7760 kilograms Hydraulic Cylinder Brand: Original Hydraulic Pump Brand: Original Hydraulic Valve Brand: Original Engine Brand: CAT (Caterpillar) Power: 49.7 kW Machinery Test Report: Available Outgoing-Inspection Video: Available Product Information: ADDITIONAL SPECIFICATIONS Product: Cat 308 Excavator (Used) Working Hours: 2200-2800 Origin: Japan Engine: Original Japanese Application: Building, Agriculture, Construction Features: Well-maintained Performance: Superior Engine Type: CAT Product for Sale: Cat 308 Excavator (Used) Are you in the market for a reliable excavator to boost your construction projects? Look no further than the Cat 308 Excavator. This powerful machine is known for its efficiency, durability, and performance in various job sites. Key Features: Operating Weight: 8,050 kg Engine Power: 68.4 kW Bucket Capacity: 0.24 - 0.52 m Maximum Digging Depth: 4,005 mm Reach at Ground Level: 6,340 mm
Engine Model CUMMINS6BTA85.9, or ISUZU 6BG1TQB-05 Type 4-cycle water-cool direct injection and turbocharged Number of cylinder 6 Bore í-stroke (mm) 102 125 or 105í-125 Piston displacement (L) 5.88 or 6.494 Rating power (KW) 125 or 117 Rating rotating speed (rpm) 2100 or 2150 Alternator (A) 35 or 40 Battery (V, Ah) 12,120 2 UNDERCARRIAGE Number of carrier rollers 2 each side Number of track roller 8each side Number of shoes 47 each side HYDRAULIC Hydraulic pump (Kawasaki) Type Variable displacement piston type Max. flow (L/min) 226í-2 Setting pressure (MPa)(kg/m2) 34.3/(350) Valve (Kawasaki) Type KWX15R Control Full hydraulic joystick Travel motor (KYB) MAG-170VP(Brake valve) Swing motor (Kawasaki) M5X130CHB(Safe valve) Hydraulic cylinderú¿KYBú¬ú¿Number of cylinders bore (mm)í-rod diamenterí-strokeú¬ Boom (mm) 130í-90í-1275 Arm (mm) 140í-100í-1635 Bucket (mm) 130í-90í-1020 ATTACHMENT 10M standard type Bucket (m3) 1.0 standard type Bucket (m3) 0.8 rock type (choose and buy) Hydraulic hammer SH800 (Choose and buy) 15Míó18M long boom type (choose and buy) Bucket (m3) 0.45 Bucket (m3) 0.29 WORKING RANGE Operation weight (kg) 22180 Max. digging height (mm) 9255 Max. dumping height (mm) 6383 Max. digging depth (mm) 6930 Max. vertical wall digging depth (mm) 5915 Max. digging reach (mm) 10173 Max. digging reach at ground level (mm ) 9993 Max. height at Min. swing radius (mm) 7717 Bucket digging force at power Max.(KN) 159.7 Swing speed (rpm) 11.7 Travel speed (km/h) L:3.1/H:5.5 Average ground press (KPa) 52.16 DIMENSION Overall length (mm) 9739 Length on ground (transport)(mm) 5162 Width of crawler (mm) 2980 Overall height (to top of boom) (mm) 3135 Overall height (to top of cab) (mm) 2939 Ground clearance counter weight (mm) 1064 Min. ground clearance (mm) 442 Tail swing radius (mm) 2838 Length of track on ground (mm) 3445 Track length (mm) 4256 Track gauge (mm) 2380 Width of crawler (mm) 2980 Width of track shoe (mm) 600 Min. swing radius (mm) 3974 Distance between swing center (mm) 2809
Asset desc: Hyundai R80 - 7 Hydraulic Excavator Chassis/Engine No/Reg No: N101D01296 Invoice Date: - 24-10-2016 Selling Price:6,00,000/-Including GST GST:90,000 /-
E312 Caterpillar excavator carrier roller Product description: Material:50Mn Tech:forging casting Hardness:48-52HRC Surface:smooth Color:yellow Guaranty:12 month Undercarriage parts model: Sprocket PC60-5 PC100-5 PC200-3 PC200-5 PC300 ZX70 EX100 EX200-1 EX200-2 EX200-3 EX300-3 EX300-5 E70B265 E120325 E110 E200B E320 SK100 SK200 SK230/21/26 DH220/21/22 DH220/21/30 DH280/21/16 SH120 SH200 SH300/435 SH300/450 SH280/23/22 R60 R130 EC290 YC85 EX300-1 DH55 R220/21/30 ZX200 SK320/21/26 R220/23/30 D6D D60 Track roller PC60-5 PC60-7 PC100-5 PC200-5A PC200-5B PC300-5 PC400-5 EX55 EX60-2 EX100 EX200-1A EX200-1B EX200-2A EX200-2B EX300-5 EX400-5 E70B E120 E200BA E200BB E325 E330 SK60 SK100 SK200A SK200B SK230 SK350 DH55 DH220A DH220B DH400 SH60 SH120 SH200A SH200B SH220 SH280 R200A R200B R290 EC210 EC290 YC85 HD770 PC40-7 CAT55 YM55 SWE70 D31 D4D D50 D60 D6D D85 Carrier roller PC60-56 PC60-7 PC100-5 PC200-5 PC200-7 PC300-5 PC300-7 EX100 EX200-1 EX200-2 EX300-5 ZAX200 E70B E120 E200B E330 SK60 SK100 SK200 SK230 DH55 DH280-5 SH60 SH120 SH200 R200 R225-7 EC290 HD770 D50 D20 D65 PC40-7 DH220-5 Front idler PC60-5 PC100-5 PC200-5 PC200-7 PC300-5 EX10065 EX10070 EX200 ZX240 EX300-1 EX300-5 E70B E120 E200B E325 E330 SK120 SK200 SK350 DH55 DH220 DH258 DH300 DH400 R130 R200 R225-7 R290 SH120 SH200 SH300/90 SH300/105 EC210 EC290 track link E70B E200B E320B CAT325 CAT330 HD700 R60-5 R60-5 R130 R130 R200 EX30-1/2 EX40-5 EX40-5 EX60-1 EX60-1 EX60-1 EX100-1 EX100-1 EX100-1 EX200-1 EX200-1 EX300-1 EX300-1 PC20 PC30 PC40 PC50 PC60 PC100 PC200 PC300 SK100 SK200
E312 Caterpillar excavator carrier roller Product description: Material:50Mn Tech:forging casting Hardness:48-52HRC Surface:smooth Color:yellow Guaranty:12 month Undercarriage parts model: Sprocket PC60-5 PC100-5 PC200-3 PC200-5 PC300 ZX70 EX100 EX200-1 EX200-2 EX200-3 EX300-3 EX300-5 E70B265 E120325 E110 E200B E320 SK100 SK200 SK230/21/26 DH220/21/22 DH220/21/30 DH280/21/16 SH120 SH200 SH300/435 SH300/450 SH280/23/22 R60 R130 EC290 YC85 EX300-1 DH55 R220/21/30 ZX200 SK320/21/26 R220/23/30 D6D D60 Track roller PC60-5 PC60-7 PC100-5 PC200-5A PC200-5B PC300-5 PC400-5 EX55 EX60-2 EX100 EX200-1A EX200-1B EX200-2A EX200-2B EX300-5 EX400-5 E70B E120 E200BA E200BB E325 E330 SK60 SK100 SK200A SK200B SK230 SK350 DH55 DH220A DH220B DH400 SH60 SH120 SH200A SH200B SH220 SH280 R200A R200B R290 EC210 EC290 YC85 HD770 PC40-7 CAT55 YM55 SWE70 D31 D4D D50 D60 D6D D85 Carrier roller PC60-56 PC60-7 PC100-5 PC200-5 PC200-7 PC300-5 PC300-7 EX100 EX200-1 EX200-2 EX300-5 ZAX200 E70B E120 E200B E330 SK60 SK100 SK200 SK230 DH55 DH280-5 SH60 SH120 SH200 R200 R225-7 EC290 HD770 D50 D20 D65 PC40-7 DH220-5 Front idler PC60-5 PC100-5 PC200-5 PC200-7 PC300-5 EX10065 EX10070 EX200 ZX240 EX300-1 EX300-5 E70B E120 E200B E325 E330 SK120 SK200 SK350 DH55 DH220 DH258 DH300 DH400 R130 R200 R225-7 R290 SH120 SH200 SH300/90 SH300/105 EC210 EC290 track link E70B E200B E320B CAT325 CAT330 HD700 R60-5 R60-5 R130 R130 R200 EX30-1/2 EX40-5 EX40-5 EX60-1 EX60-1 EX60-1 EX100-1 EX100-1 EX100-1 EX200-1 EX200-1 EX300-1 EX300-1 PC20 PC30 PC40 PC50 PC60 PC100 PC200 PC300 SK100 SK200
Product description: Material:50Mn Tech:forging casting Hardness:48-52HRC Surface:smooth Color:yellow Guaranty:12 month Undercarriage parts model: Sprocket PC60-5 PC100-5 PC200-3 PC200-5 PC300 ZX70 EX100 EX200-1 EX200-2 EX200-3 EX300-3 EX300-5 E70B\265 E120\325 E110 E200B E320 SK100 SK200 SK230/21/26 DH220/21/22 DH220/21/30 DH280/21/16 SH120 SH200 SH300/435 SH300/450 SH280/23/22 R60 R130 EC290 YC85 EX300-1 DH55 R220/21/30 ZX200 SK320/21/26 R220/23/30 D6D D60 Track roller PC60-5 PC60-7 PC100-5 PC200-5A PC200-5B PC300-5 PC400-5 EX55 EX60-2 EX100 EX200-1A EX200-1B EX200-2A EX200-2B EX300-5 EX400-5 E70B E120 E200BA E200BB E325 E330 SK60 SK100 SK200A SK200B SK230 SK350 DH55 DH220A DH220B DH400 SH60 SH120 SH200A SH200B SH220 SH280 R200A R200B R290 EC210 EC290 YC85 HD770 PC40-7 CAT55 YM55 SWE70 D31 D4D D50 D60 D6D D85 Carrier roller PC60-5\6 PC60-7 PC100-5 PC200-5 PC200-7 PC300-5 PC300-7 EX100 EX200-1 EX200-2 EX300-5 ZAX200 E70B E120 E200B E330 SK60 SK100 SK200 SK230 DH55 DH280-5 SH60 SH120 SH200 R200 R225-7 EC290 HD770 D50 D20 D65 PC40-7 DH220-5 Front idler PC60-5 PC100-5 PC200-5 PC200-7 PC300-5 EX100\65 EX100\70 EX200 ZX240 EX300-1 EX300-5 E70B E120 E200B E325 E330 SK120 SK200 SK350 DH55 DH220 DH258 DH300 DH400 R130 R200 R225-7 R290 SH120 SH200 SH300/90 SH300/105 EC210 EC290 Track link E70B E200B E320B CAT325 CAT330 HD700 R60-5 R60-5 R130 R130 R200 EX30-1/2 EX40-5 EX40-5 EX60-1 EX60-1 EX60-1 EX100-1 EX100-1 EX100-1 EX200-1 EX200-1 EX300-1 EX300-1 PC20 PC30 PC40 PC50 PC60 PC100 PC200 PC300 SK100 SK200
4. Tcm tcm230, tcm870 Motor grader: 1. Cat 12g, 120g, 14g, 16g, 140h 2. Komatsu gd511a, gd605r, gd623a Truck crane: 1.Kato:nk200, nk250, nk300e-3, nk350, nk400e-v, kr-25h-v, kr-45h-v, ss500, nk500e-v, nk800, nk1200, nk1600 2.Tadano:tl250e, tl300e, tg250e, tg300e, tl300e, tr300m, tr350m, tg352, tg400e, tg452, tg500e, tg550e, gt550e, tg650e, tg800e, tg1200e, tg1500 Crawler crane: 1. Hitachi kh125 35t, kh180 50t, kh700 150t Used excavator, cat excavator, chain excavator, caterpillar excavator, cat 320c, crawler excavator, used cat excavator, cat crawler excavator, construction machinery, construction equipment, used machine, used equipment
The 323D3 excavator uses reinforced structures, a heavy- duty, eight-roller undercarriage, and a two-stage fuel filtration system with an anti-rust fuel tank delivering a machine you can rely on. Undercarriage rollers are rebuildable and sealed to prevent dirt and debris causing internal wear
The 323D3 excavator uses reinforced structures, a heavy- duty, eight-roller undercarriage, and a two-stage fuel filtration system with an anti-rust fuel tank delivering a machine you can rely on. Undercarriage rollers are rebuildable and sealed to prevent dirt and debris causing internal wear
The Cat 320D3 GC Hydraulic Excavator delivers reduced fuel consumption by up to 15 percent, lowered maintenance costs by up to 20 percent, low owning costs, simpler routine maintenance, increased performance, and long-term durability
Hydraulic Excavator Submersible Dredge Pump Description: Hydraulic Excavator Submersible Dredge Pump is a versatile tool. It can be attached to the of an excavator and run using the excavators hydraulics, or it can be suspended from a crane or an A-frame to form a high efficient suction dredger. Design of dredgers comes out to be extremely simplified with possibility to reduce capital cost and have high working depth without any increase in the cost of equipment. Pumps can be provided with cutter heads and thus form a submersible cutter dredger, and could include high pressure water jets to work with highly compacted soil. All of our Submersible Slurry Pumps are suitable to be used for dredging. The solids are pumped mixed with water. There are many applications for our dredge pumps: Dredging of Rivers, Harbors, Dams, Canals, Lakes and Lagoons. In some cases is essential to control the turbidity while dredging.
CAT Excavator Undercarriage Parts A&S UNDERCARRIAGE CO., LTD. is an experienced and professional company specialized in providing undercarriages and undercarriage parts for excavators and bulldozers . We supply undercarriage parts for all CAT excavators. 312D undercarriage parts 312D L undercarriage parts 313B CR undercarriage parts 314C CR undercarriage parts 314C LCR undercarriage parts 315 undercarriage parts 315B undercarriage parts 315B L undercarriage parts 315C undercarriage parts 315C L undercarriage parts 315D Lundercarriage parts 320 N ME undercarriage parts 320B B-FMLY undercarriage parts 320B C-FMLY undercarriage parts 320B L B-FMLY undercarriage parts 320B L C-FMLY undercarriage parts 320B L ME undercarriage parts 320B L SLR undercarriage parts 320B ME undercarriage parts 320B N undercarriage parts 320C undercarriage parts 320C L undercarriage parts 320C L UTILITY undercarriage parts 320C MH undercarriage parts 320C UTILITY undercarriage parts 320D undercarriage parts 322B L SLR undercarriage parts 325B ME undercarriage parts 325C undercarriage parts
Made in japan Year 2006 Working 2900 hours Very good working condition. Machinery location shanghai china 21t
Used cat 325c excavator Fob shanghai 45000 USD Our company is one of the biggest wholesalers and retailers of used machinery in China. Our company specialized in export all kinds of the used construction machinery,For example,used excavators,used bulldozers,used loaders,used dumpers,used forklifts,used cranes,used graders and used road rollers. Welcome to visit our factory for more business cooperation .Thanks!
A&s undercarriage co., ltd. Is an experienced and professional company specialized in providing undercarriages and undercarriage parts for excavators and bulldozers . We supply undercarriage parts for the following cat excavators. 320 l me undercarriage parts 320 lr undercarriage parts 320 me undercarriage parts 320 n undercarriage parts 320 n me undercarriage parts 320b b-fmly undercarriage parts 320b c-fmly undercarriage parts 320b l b-fmly undercarriage parts 320b l c-fmly undercarriage parts 320b l me undercarriage parts 320d lrr undercarriage parts 321b lcr undercarriage parts 321c lcr undercarriage parts 321d lcr undercarriage parts 322 b-fmly undercarriage parts 322 d-fmly undercarriage parts 322 l b-fmly undercarriage parts 322b l b-fmly undercarriage parts 322b ln undercarriage parts 322b s-fmly undercarriage parts 322c undercarriage parts 322c l undercarriage parts 324d undercarriage parts 324d l undercarriage parts 325 me undercarriage parts 25b c-fmly undercarriage parts 325b l c-fmly undercarriage parts 325b l me undercarriage parts 325b ln undercarriage parts 325b me undercarriage parts 325d mh undercarriage parts 328d lcr undercarriage parts 330 c-fmly undercarriage parts 330d undercarriage parts 345b lii uhd undercarriage parts 345c l undercarriage parts 365c l me undercarriage parts 365c uhd undercarriage parts 375 h-fmly undercarriage parts 375 j-fmly undercarriage parts 385b l mass undercarriage parts 385b l reach undercarriage parts 385b mass undercarriage parts 385b reach undercarriage parts 385c undercarriage parts 385c l undercarriage parts
We supply undercarriage parts for all CAT excavators. CAT 320 L C-FMLY undercarriage parts CAT 320 L ME undercarriage parts CAT 320C L UTILITY undercarriage parts CAT 320C MH undercarriage parts CAT 320D LRR undercarriage parts CAT 321B LCR undercarriage parts CAT 321C LCR undercarriage parts CAT 321D LCR undercarriage parts CAT 322 B-FMLY undercarriage parts CAT 322 D-FMLY undercarriage parts CAT 25B C-FMLY undercarriage parts CAT 325B L C-FMLY undercarriage parts CAT 325B L ME undercarriage parts CAT 325B LN undercarriage parts CAT 330 L ME undercarriage parts CAT 330 ME undercarriage parts CAT 330B D-FMLY undercarriage parts CAT 345C UHD undercarriage parts CAT 345D L undercarriage parts CAT 350 F-FMLY undercarriage parts CAT 350 G-FMLY undercarriage parts CAT 365B L ME undercarriage parts CAT 365B L V-FMLY undercarriage parts CAT 365C L undercarriage parts CAT 365C L ME undercarriage parts CAT 365C UHD undercarriage parts CAT 375 H-FMLY undercarriage parts CAT 375 J-FMLY undercarriage parts CAT 375 L H-FMLY undercarriage parts CAT 385B MASS undercarriage parts CAT 385B REACH undercarriage parts CAT 385C undercarriage parts CAT 385C L undercarriage parts etc. The undercarriage parts provided for CAT excavators include: CAT excavator track shoes/pads CAT excavator track chains/link assy. CAT excavator track/front idlers CAT excavator track/bottom rollers CAT excavator carrier rollers CAT excavator driving sprockets CAT excavator bolts and nuts CAT excavator tension springs A&S Complete Supply Range for undercarriage parts CAT excavator/bulldozer undercarriage parts DAEWOO excavator undercarriage parts HITACHI excavator/bulldozer undercarriage parts HYUNDAI excavator/bulldozer undercarriage parts JCB excavator undercarriage parts KATO excavator undercarriage parts KOBELCO excavator/bulldozer undercarriage parts KOMATSU excavator undercarriage parts LIEBHERR excavator undercarriage parts O&K excavator undercarriage parts TEREX excavator undercarriage parts VOLVO excavator undercarriage parts SUMITOMO excavator undercarriage parts MITSUBISHI excavator undercarriage parts JOHN DEERE excavator undercarriage parts YANMAR excavator undercarriage parts KUBOTA excavator undercarriage parts TAKEUCHI excavator undercarriage parts SANY excavator undercarriage parts ZOOMLION excavator/bulldozer undercarriage parts LIUGONG excavator undercarriage parts XCMG excavator undercarriage parts LONKING excavator undercarriage parts YUCHAI excavator undercarriage parts CHANGLIN excavator undercarriage parts SHANTUI excavator undercarriage parts