JIAOHUAbrakes & couplings from China
Shanghai Jiaohua Hydraulic Machinery Co., Ltd.
Specialized manufacturer of fluid couplings and permanent magnet couplings, founded in 1984 based on Shanghai Jiao Tong University research. Products awarded 'Shanghai Brand' title.
Brakes & Couplings
COX Torque-Limiting Permanent Magnet Coupling
COX is a limited-moment permanent magnet coupler (developed by Jiaohua in 2012): torque is transmitted across an air gap between a copper conductor rotor on the motor shaft and a permanent magnet rotor on the reducer side, with no mechanical connection. At start-up the gap opens from 5 to 8 mm so the motor accelerates almost unloaded; if the load jams, the gap opens to 35 mm and torque transmission stops, and the coupler returns to operation by itself once the cause is removed. Slip 1–4 %, no oil, bearings or power supply. 16 sizes, 11–710 kW at 1,500 rpm.
- Sizes
- 16: COX-270 … COX-750
- Power at 1,500 / 1,000 / 750 rpm
- 11–710 / 15–450 / 15–355 kW
- Slip (motor at rated speed)
- 1–4 %
- Air gap
- 5 mm as installed, up to 8 mm at start-up
- Torque limiting
- on overload the gap opens to 35 mm and torque transmission stops; automatic reset
- Permissible misalignment
- offset up to 5 mm, angular up to 2°
- Outside diameter / weight
- 340–860 mm / 65–365 kg
- Ambient temperature
- down to −45 °C
YOX Fluid Coupling with Jaw-Type Elastic Coupling
YOX is the basic version of the Jiaohua torque-limiting constant filling fluid coupling: the reducer shaft fits directly into the coupling bore, and the motor is connected through an ML jaw-type elastic half-coupling (GB 5272-85) with a spider. It is the shortest and most widely used arrangement. 19 sizes YOX-190…YOX-1000 (the number is the effective working-circuit diameter in mm) transmit 0.6–760 kW at 1,500 rpm and up to 1,000 kW at 1,000 rpm. YOXy and YOXys versions with an enlarged rear and side chamber extend the start-up. If the load jams, oil is released through a fusible plug.
- Sizes
- 19: YOX-190 … YOX-1000
- Power at 1,500 rpm
- 0.6–760 kW (YOX-190 … YOX-750)
- Power at 1,000 rpm
- 0.4–1,000 kW (YOX-220 … YOX-1000)
- Max. shaft bore
- motor d1 30–150 mm, reducer d2 25–150 mm
- Outside diameter
- 235–1,120 mm
- Weight / oil fill
- 8–650 kg / 0.4–156 L
- Motor-side connection
- ML jaw-type elastic half-coupling (GB 5272-85), spider MT4–MT12
- Versions
- YOX; YOXy — enlarged rear chamber; YOXys — rear and side chambers
COXZ Torque-Limiting Permanent Magnet Coupling
COXZ is a limited-moment permanent magnet coupler with a brake wheel at the output, for drives with a shoe brake. The principle is the same as COX: a copper rotor on the motor shaft and a magnet rotor on the reducer side transmit torque across a 5 mm gap; if the load jams, the gap opens to 35 mm and torque transmission stops, and operation resumes once the overload is removed. 16 sizes COXZ-270…COXZ-750: 11–710 kW at 1,500 rpm, brake wheel Ø300–630 mm, weight 105–670 kg. Tolerates up to 5 mm offset and 2° angular misalignment.
- Sizes
- 16: COXZ-270 … COXZ-750
- Power at 1,500 / 1,000 / 750 rpm
- 11–710 / 15–450 / 15–355 kW
- Brake wheel Dz/Lz
- 300/150 … 630/265 mm
- Slip (motor at rated speed)
- 1–4 %
- Air gap
- 5 mm as installed; up to 35 mm on overload (torque transmission stops)
- Permissible misalignment
- offset up to 5 mm, angular up to 2°
- Outside diameter
- 340–860 mm
- Weight (body)
- 105–670 kg
YOX IIZ Brake Wheel Type, Outer-Wheel Drive
YOXIIZ is a constant filling fluid coupling with a brake wheel hub at the output end. It is an outer-wheel drive: the coupling is rigidly mounted on the motor shaft, and the brake wheel is connected to the reducer shaft through an elastic half-coupling with a spider, nylon pins or a customer-specified type. Parts are standardised, overall dimensions follow the industry norm. 10 sizes 360–1000, brake wheel Ø300–700 mm, 15–760 kW at 1,500 rpm. YOXyIIZ/YOXysIIZ versions extend the start-up. In SDS projects YOXIIZ/YOXyIIZ were offered to replace Flender FLUDEX FND/FNDS on belt conveyors.
- Sizes
- 10: YOXIIZ-360 … YOXIIZ-1000
- Power at 1,500 rpm
- 15–760 kW (360 … 750)
- Power at 1,000 rpm
- 4.5–1,000 kW
- Brake wheel Dz/Lz
- 300/150 … 700/300 mm
- Max. shaft bore
- motor d1 55–150 mm, reducer d2 55–150 mm
- Weight / oil fill
- 85–860 kg / 3.8–156 L
- Drive arrangement
- outer-wheel drive; rigid on motor shaft, brake wheel via elastic half-coupling
- Versions
- YOXIIZ; YOXyIIZ — enlarged rear chamber; YOXysIIZ — rear and side chambers
YOXZ Brake Wheel Type, Inner-Wheel Drive
YOXZ is a constant filling fluid coupling with a brake wheel at the output and inner-wheel drive: the coupling is mounted on the motor shaft, and the brake wheel hub is connected to the reducer shaft through an elastic half-coupling with a spider, nylon pins or a type specified on order. The layout is shorter than YOXIIZ: the minimum length of YOXZ-1000 is 970 mm versus 1,140 mm. 12 sizes 280–1000, brake wheel Ø200–700 mm, 4–760 kW at 1,500 rpm and up to 1,000 kW at 1,000 rpm. YOXyz/YOXysz versions with enlarged chambers give a softer start.
- Sizes
- 12: YOXZ-280 … YOXZ-1000
- Power at 1,500 rpm
- 4–760 kW (280 … 750)
- Power at 1,000 rpm
- 1.5–1,000 kW
- Brake wheel Dz/Lz
- 200/85 … 700/300 mm
- Max. shaft bore
- motor d1 38–150 mm, reducer d2 45–150 mm
- Weight / oil fill
- 33–770 kg / 1.5–156 L
- Drive arrangement
- inner-wheel drive; shorter axial length than YOXIIZ
- Versions
- YOXz; YOXyz — enlarged rear chamber; YOXysz — rear and side chambers
YOXp Pulley Type
YOXp is a constant filling fluid coupling with a belt pulley on the housing: the motor (or reducer) shaft fits directly into the coupling bore, and torque is taken off the pulley. The layout needs no intermediate coupling and suits belt-driven machines. 15 sizes YOXp-190…YOXp-650: 0.6–500 kW at 1,500 rpm, 4.5–145 kW at 3,000 rpm, bore up to 120 mm, length 124–360 mm, weight 8–220 kg. Pulley data are specified on order. For sizes 360–560 a YOXFp variant with an enlarged housing cavity is available.
- Sizes
- 15: YOXp-190 … YOXp-650
- Power at 1,500 rpm
- 0.6–500 kW
- Power at 3,000 rpm
- 4.5–145 kW (YOXp-190 … YOXp-400)
- Max. shaft bore
- 25–120 mm
- Outside diameter / length
- 235–750 mm / 124–360 mm
- Weight / oil fill
- 8–220 kg / 0.4–46 L
- Connection
- motor or reducer shaft into coupling bore, output via pulley
- Pulley
- belt drive data supplied by customer
YOXf Double Flange Type
YOXf is the double-flange version: the coupling is attached to the motor and reducer through connecting flanges, rigidly to the motor shaft, with an elastic coupling at the output — usually a TL elastic sleeve-pin coupling, alternatively an ML jaw coupling with spider or an HL pin coupling. Installation, adjustment and removal are simplified at the cost of a slightly longer axial length; parts are highly standardised. 15 sizes YOXf-250…YOXf-1000, bores up to 180 mm, 2.5–760 kW at 1,500 rpm and up to 1,000 kW at 1,000 rpm. YOXyf/YOXysf versions with enlarged chambers suit heavy starts.
- Sizes
- 15: YOXf-250 … YOXf-1000
- Power at 1,500 rpm
- 2.5–760 kW (250 … 750)
- Power at 1,000 rpm
- 0.7–1,000 kW
- Max. shaft bore
- motor d1 35–180 mm, reducer d2 35–180 mm
- Output coupling
- TL4–TL13 elastic sleeve-pin or HL2–HL11 pin coupling (ML on request)
- GOST counterpart of output coupling
- TL — MUVP, GOST 21424-93
- Weight / oil fill
- 18–740 kg / 1.3–156 L
- Versions
- YOXf; YOXyf — enlarged rear chamber; YOXysf — rear and side chambers
YOXF Compound Drain Type
YOXF is a version with an enlarged inner cavity of the rotating housing (the manufacturer calls it the "compound liquid-off" type). Like the versions with additional chambers, this extends the start-up and reduces shock loads on the driven machine. It is an inner-wheel drive, with the coupling weight carried by the motor shaft. 5 sizes 360–560: 15–250 kW at 1,500 rpm, bores up to 100/110 mm, weight 34–112 kg — lighter than YOX of the same sizes (40–140 kg). Variants: YOXF with shaft-in-bore connection, YOXFp with belt pulley, YOXFZ with brake wheel.
- Sizes
- 5: YOXF-360 … YOXF-560
- Power at 1,500 rpm
- 15–250 kW
- Power at 1,000 rpm
- 4.5–90 kW
- Max. shaft bore
- d1 55–100 mm, d2 55–110 mm
- Outside diameter
- 410–642 mm
- Weight / oil fill
- 34–112 kg / 3.5–25 L
- Drive arrangement
- inner-wheel drive, coupling weight carried by motor shaft
- Versions
- YOXF; YOXFp — with belt pulley; YOXFZ — with brake wheel
YOX Pin Connection Type
A variant of the basic YOX fluid coupling in which the jaw-type elastic half-coupling with a spider is replaced by one with nylon (polyamide) pins. The connection is unchanged: the reducer shaft fits into the coupling bore, the motor is connected via the pin half-coupling. According to the manufacturer, shaft alignment during installation is simpler, and the pins can be replaced without moving the motor or reducer. Sizes YOX-190…YOX-1000 share the YOX connection dimensions: 0.6–760 kW at 1,500 rpm, up to 1,000 kW at 1,000 rpm, bores up to 150 mm. A temperature switch is available on request.
- Sizes
- 19: YOX-190 … YOX-1000
- Power at 1,500 rpm
- 0.6–760 kW (YOX-190 … YOX-750)
- Power at 1,000 rpm
- 0.4–1,000 kW (YOX-220 … YOX-1000)
- Max. shaft bore
- motor d1 30–150 mm, reducer d2 25–150 mm
- Weight / oil fill
- 8–650 kg / 0.4–156 L
- Motor-side connection
- pin half-coupling with nylon (polyamide) pins
- Maintenance
- pins replaced without moving motor or reducer
- Options
- temperature switch (on request)
YOX IIZ Nylon Pin Connection Brake Wheel Type
A constant filling fluid coupling with a brake wheel and a pin connection at the output: instead of an elastic spider, torque is transmitted to the brake wheel hub by nylon (polyamide) pins. The connection to motor and reducer is the same as in the basic version; in the manufacturer's table the series is based on YOXIIZ with outer-wheel drive. Shaft alignment during installation is simpler, and the pins are replaced without moving the motor or reducer. 10 sizes 360–1000, brake wheel Ø300–700 mm, 15–760 kW at 1,500 rpm, up to 1,000 kW at 1,000 rpm, bores up to 150 mm.
- Sizes
- 10: YOXIIZ-360 … YOXIIZ-1000
- Power at 1,500 rpm
- 15–760 kW (360 … 750)
- Power at 1,000 rpm
- 4.5–1,000 kW
- Brake wheel Dz/Lz
- 300/150 … 700/300 mm
- Max. shaft bore
- motor d1 55–150 mm, reducer d2 55–150 mm
- Weight / oil fill
- 85–860 kg / 3.8–156 L
- Output connection
- pin half-coupling with nylon (polyamide) pins
- Maintenance
- pins replaced without moving motor or reducer
FAQ — JIAOHUA
What equipment does SDS supply from JIAOHUA?
SDS delivers the full JIAOHUA product range including brakes & couplings. Detailed series, sizes and technical specifications are available on this page; full PDF catalogues can be downloaded from the Catalogues section.
In which industries is JIAOHUA equipment used?
JIAOHUA equipment is applied in metallurgy, mining & mineral processing, cement industry and power generation and other industries. We select a specific model for your duty cycle, load profile, working environment and ambient conditions.
What is the warranty and lead time for JIAOHUA?
Standard manufacturer warranty — 12 months from commissioning, no more than 18 months from shipment. Production lead time is 4–16 weeks depending on specification (the equipment is manufactured in China, Shanghai). Delivery to Russia is by road transport. Detailed terms are on the Terms of Cooperation page.
How to order JIAOHUA equipment from SDS?
Send a technical request with operating parameters and requirements. Within one business day we prepare a technical-commercial proposal with firm pricing and delivery schedule. Default Incoterms — DDP (with EAEU certification and customs clearance included).
Need help with JIAOHUA?
An SDS engineer will size the unit for your load and quote it — usually within one business day.