Product Overview

This Rexroth crane hoist gearbox is the planetary reducer driving the hoist on crawler cranes from SANY, XCMG, FUWA and ZOOMLION, and it is the reference fitted to the FUWA QUY250 main and auxiliary winch. It sits between the hydraulic motor and the winch drum, turning motor speed into the torque a hoist needs to lift, hold and lower a load, and it bolts to the winch frame on flanged mounting ends with a machined centre band and a red-painted housing. Units arrive new, with the Rexroth identification plate intact. That plate carries the type code, the ratio, the MNR and the serial number, and it matters more than the badge on the crane: the same GFT family is used by four manufacturers across several machine sizes, and it is the ratio and the input coupling that decide fit before the model name does. Workshops tend to reach for this reference when a winch starts to whine under load, when the drum will not hold, or when an oil sample comes back with metal in it. We have been supplying construction machinery spare parts from Shenyang since 2017 to repair shops, fleet maintenance teams and parts traders, and the questions we ask before anything ships are the same ones a technician asks on site: which machine, which winch, which ratio, and what does the plate say.

Specifications

Product type	Planetary gear reducer
Series	GFT110
Type designation	GFT110W3B129-03
Ratio	128.60
FD marking	21W20
Material	Stainless steel
Condition	100% new
Winch application	Crawler crane hoist drive
Compatible crane brands	SANY, XCMG, FUWA, ZOOMLION
Manufacturer	Rexroth
Manufacturer code	7370
Country of manufacture	China

Fitment & Identification

1. Read the plate first. The Rexroth GFT label gives the type code, ratio, MNR and serial number. Photograph it while the old unit is still on the machine, because a plate that has been pressure-washed or painted over tells you nothing afterwards.
2. Record the machine. Make, model and serial number — a FUWA QUY250, a SANY crawler, an XCMG or a ZOOMLION unit. Crawler crane parts change between series, and so do mobile crane parts; the serial number tells us which build you are working on.
3. Check the ratio. A reducer with the wrong ratio still bolts up and leaves the winch running at the wrong line speed. Compare the figure on the old plate with the one on the reducer replacement before anything is lifted into place.
4. Match the mounting. Compare flange bolt pattern, spigot and bolt-hole count between old and new. If you cannot measure it, a straight-on photograph with a rule laid across the flange is usually enough.
5. Check the input connection. Confirm how the motor couples to the reducer — spline, shaft and any adaptor — because this joint is where a hydraulic crane part most often refuses to seat.
6. Send three photographs. Plate, flange and machine plate. With those we can confirm the reference before you commit, and flag any crane electrical components or other worn parts that should change at the same time.

Reducer Range & Related Parts

• GFT80W30B77 — GFT80W30B77-12, GFT80W30B77-17, GFT80W30B77-41
• GFT36W3B79 — GFT36W3B79-30, GFT36W3B79-31
• GFB60T3B107 — GFB60T3B107-01, GFB60T3B107-13
• GFT110T3B215 — GFT110T3B215-03, GFT110T3B215-11
• GFB36T3B80 — GFB36T3B80-20
• GFT110W3B88 — GFT110W3B88-03, GFT110W3B88-23, GFT110W3B8802
• GFT80W3B99 — GFT80W3B99, GFT80W3B99-28, GFT80W3B99-29
• GFB60T3B87 — GFB60T3B87-08
• GFT110W3B96 — GFT110W3B96-22, GFT110W3B96-35
• GFT80W3B127 — GFT80W3B127-14
• GFT600N — GFT600N1014, GFT600N1019
• GFB80T3B128 — GFB80T3B128-05
• GFB80T3B151 — GFB80T3B151
• Beyond the list — if your reference is not here, send the plate photograph; we source Rexroth GFT and GFB crawler crane parts beyond the numbers above.
• Sourcing — as crane parts suppliers we also handle the hydraulic items and crane electrical components around the winch, so a repair can leave as one shipment.

Installation & Commissioning

1. Isolate the crane. Lock out the machine and support the drum before the hydraulic motor is disconnected. A drum that turns while the reducer is off its bolts is how hands get hurt.
2. Drain and inspect the oil. Catch the oil from the old unit in a clean container and run a magnet through it. Metal tells you whether the failure stopped at the crane hoist gearbox — a clean reducer replacement — or travelled further into the winch.
3. Lift on the housing. Sling the reducer around the housing, never on the input shaft, and keep the flange face covered until it is over the studs.
4. Seat and torque. Clean the mating face and the bolt threads, seat the unit on its spigot, then tighten the flange bolts in a cross pattern to the figure given in the crane manual.
5. Couple the motor. Check that the spline engages fully and that the shaft turns freely by hand before the motor bolts are drawn down.
6. Fill and check. Fill to the level plug with the lubricant grade the machine manual lists, then watch the flange and the input seal for weeping during the first few minutes of running.
7. Run it in unloaded. Work the winch through several full hoist and lower cycles with no load, listen for anything new, confirm the crane load indicator still reads true, then re-check bolt torque and oil level before the crane returns to work.

Maintenance & Service

• Oil level before every shift. Check at the level plug with the unit cold. A hydraulic crane part that runs low fails at the bearings long before the gears show any wear.
• Oil change on the manual's interval. The grade and the interval come from the crane manufacturer's schedule rather than the reducer plate. Keep to it, and keep the drain plug clean so the sample you take means something.
• Watch the seals. A film of oil at the output flange or around the input shaft is the early warning; a drip onto the drum is the point to stop running.
• Listen at the end of the shift. A whine that changes with load, or a knock on reversal, supports bearing or gear damage. Note the hour-meter reading when it started.
• Keep the plate legible. Wipe the oil off the type plate when you service the unit; a readable type code and ratio is what makes the next order of construction machinery spare parts a one-step job instead of a guess.
• Store a spare properly. Leave a standby reducer replacement in its plywood box, cap the ports and turn the input shaft by hand every few months so the seals do not take a set.
• Tell us how it runs. After the crane has put a season on the new unit, a short review with the machine model, year and running hours helps the next owner judge what to expect — and our engineers read every one.

FUWA Crawler Cranes

FUWA is one of China's major construction machinery companies. The group was set up in 1904 and has the longest history of any construction equipment manufacturer in the country, with a long record of contribution to the industry. FUWA builds machines to a standard its customers rely on, keeps developing new models on current technology, and has improved its management step by step to support the service it gives customers.

We supply FUWA crawler crane parts from China, with the response times a working machine needs. Close to ten years on this product line has built a reputation in more than 20 countries, with after-sales service stations in a number of them and crane engineers who can attend site when a repair goes beyond the workshop. Our FUWA crane parts catalogue covers the full range.

The crawler range is where most of that expertise sits, but the same organisation covers mobile crane parts for the truck cranes in a mixed fleet.

Structure, undercarriage, hydraulic and electrical groups are all supplied for these machines, and the wider construction machinery spare parts list is handled on the same order.

Crane electrical components — cables, monitors, controllers and sensors — sit alongside the mechanical side, so a machine can be brought back to specification without splitting the order three ways.

Load monitoring goes the same way: a crane load indicator is matched to the machine model and to the display already fitted, so the replacement reads the same as the one it replaces.

Ordering & Delivery

Technical Support & Model Matching

Not sure which part fits your machine? Send the part number, the machine model, and a photo of the nameplate or the worn item, and our engineers — each with more than ten years in the construction machinery business — will confirm the correct reference and quote it. We advise on installation, help trace faults, and answer technical questions before and after dispatch. Since 2017 we have built this support on a supplier network covering FUWA, SANY, XCMG and ZOOMLION, so older and hard-to-find references can usually still be sourced.

FAQ