Crane & Lifting Parts
XCMG, SANY and Zoomlion crane parts for lifting fleets
Application Context
Crane hydraulic, slewing, winch, outrigger and electronic safety system parts for lifting contractors and oilfield construction fleets.
Quote Inputs
- Crane model
- Serial number
- System photo
- Part number
- Working pressure if hydraulic
Related Products
Crane and lifting parts
XCMG Crane Slewing Bearing
Slewing bearing and related crane rotation parts for XCMG lifting fleets and oilfield construction sites. A slewing bearing is a structural safety part: XCMG crane model codes carry suffixes (XCT25L5_S and XCT25L5_SR are not the same build) and tooth count, raceway diameter and bolt hole pattern can differ between them. We quote these only against the full nameplate code and the machine serial number — never against a shortened model name.
Hydraulic parts
SANY Hydraulic Cylinder Seal Kit
Seal kit matching for SANY boom, arm, bucket and outrigger cylinders. Seal kits are identified by the cylinder, not by the machine: bore diameter, rod diameter and the seal groove arrangement decide the kit, and a single excavator carries boom, arm and bucket cylinders in three different sizes, while a truck crane adds outrigger and telescoping cylinders again different. This listing spans a 21.9 t excavator, a 35 to 38.1 t excavator and a 25 t class truck crane, which have nothing in common at cylinder level. Measure the rod diameter and the bore and send those with the machine serial number. Two things worth knowing: a cylinder that has been resealed twice and still leaks usually has a scored rod or a worn gland bore, and no seal kit will fix that; and it is better to buy the kit for the cylinder you are opening than a set for the machine, because a cylinder that is not leaking is best left closed.
Crane and lifting parts
SANY Crane Outrigger Cylinder Parts
Cylinder components and seals for SANY truck crane outrigger systems. Outriggers are a structural safety system and the parts scale with the crane: the STC250 sits at 32.1 to 33.1 t operating weight on a 6.4 by 5.35 m outrigger span with 7 t of counterweight, while the STC500 hybrid builds carry 8.5 to 11 t of counterweight on spans up to 8.0 by 6.42 m. Nothing interchanges across the range, and the suffix matters even within one model — the STC250C5-1 and the STC250C5-8 already differ from each other in outrigger span. Outrigger cylinders carry load-holding valves and those must be replaced like for like: substituting a valve with a different cracking pressure on a load-bearing circuit is not a saving worth making. Send both the chassis nameplate and the superstructure serial number, since crane parts are documented in two separate books.
Crane and lifting parts
SANY Crane Hoist Wire Rope
Main and auxiliary hoist wire rope for SANY STC-series truck cranes, specified from SANY's own product brochures rather than by tonnage. The export STC250 runs 16 mm rope (16-35W×7-1960) — 175 m on the main winch and 105 m on the auxiliary. The STC500 runs 18 mm (18-35W×7-1960), 220 m and 130 m. The STC800 and the later STC800S both run 20 mm (20-35W×7-1960), 245 m and 145 m. 35W×7 is a rotation-resistant construction and 1960 is the wire tensile grade in MPa: a rope of the same diameter but a different construction can let the hook block spin under load, so diameter alone is not a specification. The letters after the grade on the brochure designation (USS, USZ) code the finish and lay direction and are worth matching to the tag on the old reel. These figures come from export brochures; domestic C5-series builds are not covered by them, so confirm on the machine before ordering. Replace against the discard criteria in the operator manual — broken wires, diameter loss, kinks, birdcaging — not against hours, and check the drum and sheave grooves at the same time: a worn groove shortens the life of a new rope.
Crane and lifting parts
SANY Crane Slewing Bearing and Slew Reducer
Slewing bearing, slew reducer and slew motor parts for SANY STC-series truck cranes. The bearing is sized to load moment, not to the tonnage badge. On SANY's published figures the export STC250 carries 962 kN·m on the base boom, the STC500 1,774 kN·m and the STC800 2,560 kN·m, so raceway diameter, ball size and bolt pattern are a size class apart across the three; the later STC800S is rated at 2,822 to 2,958 kN·m depending on counterweight and is a different build again. The STC250 brochure specifies a single-row ball slewing ring. Maximum slewing speed is 2.0 r/min on the STC500 and STC800 and 2.0 to 2.2 r/min across STC250 brochure editions, while domestic C5 builds of the STC250 list 2.6 to 2.8 r/min — the reducer and motor are matched to that speed. A slewing bearing is a structural safety part and we quote it only against the superstructure serial number. Before ordering one for a crane that slews roughly, measure the tilt clearance with the boom loaded and unloaded and compare it with the wear limit in the manual: jerky starts and stops are more often the slew brake, the slewing buffer valve or the reducer than the bearing.
Electrical parts
Zoomlion Crane Load Moment Sensor
Load moment sensor and safety system component matching for Zoomlion cranes. The load moment limiter is the primary safety system on the crane and its parts are not generic: the ZTC250V is a 25 t machine with a 960 kN.m base boom moment while the ZTC550V is a 55 t machine at 2,033 kN.m, so the length sensor, angle sensor, pressure transducers and limiter display are all matched to the specific machine and to the boom configuration it was built with. We quote these only against the full model code and the superstructure serial number. One thing to establish before buying: a limiter that reads wrong is more often a calibration or a wiring fault than a failed sensor, and a new sensor fitted to a system nobody recalibrates will read wrong in exactly the same way. Tell us what the system is doing and we will help narrow it down first.
Crane and lifting parts
Zoomlion Crane Winch Motor
Winch motor and hydraulic drive parts for Zoomlion truck crane maintenance. Winch capacity scales with the crane: the ZTC250V is a 25 t machine and the ZTC550V a 55 t machine at more than twice the base boom moment, so the main hoist motor, its brake and the reduction gearbox are a size class apart between them. The main hoist and the auxiliary hoist on the same crane are also different assemblies, which is worth stating on the enquiry rather than leaving us to ask. Crane part numbers are split between the chassis book and the superstructure book, so anything on the winch is quoted against the superstructure serial number. If the complaint is a hoist that creeps under load, look at the brake and the counterbalance valve before the motor — those are much cheaper parts and they account for most creep faults.
Hydraulic parts
Zoomlion Crane Hydraulic Hose Kit
Hydraulic hose kits quoted by crane model, hose length, fitting type and pressure requirement. Hoses are the item on a crane where the machine model tells us the least. What identifies a hose is the inside diameter, the length between fitting faces, the fitting type and thread at each end, the orientation of any bend, and the pressure rating of the circuit it serves. Photograph the failed hose with the layline text if it is still readable and measure it end to end. Two things worth knowing before ordering: boom hoses run inside the sections and are routed to a specific length, so a hose that is merely close will chafe through and fail again; and once one hose in a circuit has failed from age, the rest of that circuit is the same age, which is why we quote them as a set rather than one at a time.
Crane and lifting parts
Zoomlion Crane Outrigger Cylinder and Seal Kit
Outrigger jack cylinders, horizontal extension cylinders, seal kits and load-holding valves for Zoomlion truck cranes. Zoomlion's QY25V brochure puts the 25 t machine on a 5.15 m by 6.1 m outrigger spread at 29,400 kg in driving condition, 22,900 kg of it on the rear axle group, and it prints separate lifting tables for outriggers fully extended and intermediately extended — so the horizontal beams are worked at two positions and both cylinder types see service. The ZTC250V that replaced it travels at 29,600 kg, and the ZTC550V at 42,000 kg with more than twice the base boom moment, which puts its jack cylinders a bore class above the 25 t cranes. A crane has four vertical jacks and four horizontal extension cylinders, and some builds add a fifth jack under the front of the chassis; front and rear jacks are not always the same part, so name the corner on the enquiry. A leg that sinks slowly under load usually points to the piston seal or the pilot-operated check valve on the cylinder rather than a damaged barrel, so say whether the leg creeps down, will not retract or leaks at the rod before ordering a complete cylinder. Send the rod diameter, the retracted pin-to-pin length and the stamping on the barrel together with the chassis nameplate.
Crane and lifting parts
Zoomlion Crane Boom Wear Pads and Telescoping Seals
Boom slide pads and telescopic cylinder seal kits for Zoomlion truck cranes. On the QY25V the main boom runs from 10.3 m to 38.5 m, and Zoomlion's lifting tables show how that 28.2 m of travel is split: telescopic cylinder I contributes up to 7.1 m and telescopic cylinder II the remaining 21.1 m. Full extension takes 120 s on the brochure figure, and every cycle drags the sections across their pads. That split matters when ordering — the two cylinders are different parts with different seal kits, and a boom that extends unevenly or will not hold its length points to one stage, not both. The ZTC250V, the 25 t crane that followed, is a different boom: its load moment falls from 960 kN·m on the base boom to 672 kN·m fully extended, against 950 and 525 kN·m on the QY25V, so pads and cylinders are not carried across by tonnage. Pads are identified by section and position — upper, lower and side pads on one section are separate parts, and the pads at the head of one section are not the pads at the tail of the section sliding inside it. Tell us which section shows scoring or metal-to-metal marks and measure the remaining pad thickness; for seals, send the stamping on the cylinder and say whether it is cylinder I or II. A boom that creeps in under load is more often the balance valve on the telescopic cylinder than the seals.
Crane and lifting parts
Zoomlion Crane Hoist Wire Rope
Main and auxiliary hoist wire rope for Zoomlion truck cranes, quoted from the rope actually on the drum. Zoomlion's QY25V brochure gives the duty the rope works at but not its diameter: 135 m/min on the main winch and 100 m/min on the auxiliary, both measured at the third layer on the drum, with the 25 t hook block reeved on 8 parts of line at the 10.3 m base boom and down to 3 parts at the full 38.5 m, and the 3 t hook on the 8 m jib running on a single line. That reeving table is why length cannot be guessed from tonnage: full-height work on few parts and short-boom work on eight both have to be covered by the rope on the drum, and the auxiliary rope is a separate length again. Because the brochure does not publish the diameter or the construction, we do not quote from a catalogue figure. Send the tag or certificate from the old reel, or measure the diameter across the crowns of the strands on an unworn section near the drum anchor, and tell us the length you need and whether it is the main or the auxiliary rope. Hoist ropes on telescopic cranes are rotation-resistant constructions, and a same-diameter rope of another construction can let the hook block spin under load. The same rule applies on the ZTC250V and the ZTC550V — the 55 t crane carries more than twice the base boom moment, and its rope, sheaves and hook block are grooved a size up. Replace against the discard criteria in the operator manual, and check the sheave grooves while the rope is off.