Textile .

BONENG R-series (helical inline) and M-series (parallel-shaft) gearmotors rated 0.18–7.5 kW are installed on every section of frame machines — stenters, sizing machines, finishing lines. Compact dimensions (housing length from 180 mm) allow one drive per section on a 250–400 mm pitch. Continuous S1 duty at 0.7–0.9 load factor is the typical textile profile.

• Rated power 0.18–7.5 kW
• Gear ratio 5–250
• Housing length up to 350 mm for R-series rated up to 2.2 kW
• Service factor of at least 1.4 at S1, 24/7
• IP55, insulation class F

Two- and three-stage helical-bevel K-series gearboxes from BONENG or GUOMAO drive stenter frames and dryer sections at 30–110 kW. They operate with the fabric tensioning chain and demand smooth motion and accurate speed holding — a ±1% deviation already produces shade variation in dyeing. A forced-lube system with oil filtration is mandatory above 45 kW.

• K-series (helical-bevel) or R-series (helical inline)
• Rated power 30–110 kW
• Service factor of at least 1.5
• Speed-holding accuracy of ±1% under varying load
• Forced circulation lubrication

Dyeing equipment runs at 100% humidity with aggressive dye liquors and bath temperatures of 95–135°C. IP65-rated gearmotors are used, with FKM (Viton) shaft seals and anti-corrosion housing coatings. Power ratings are 7.5–45 kW for the jigger barrel drive and 22–75 kW for the jet-machine circulation pump.

• IP65 minimum, housing with anti-corrosion coating
• FKM shaft seals (resistant to dyes and elevated temperature)
• Rated power 7.5–75 kW
• Insulation class H with thermal reserve for humid environments
• Service factor of at least 1.5

Calenders for embossing, film lamination and fabric sizing require gearboxes with high torsional stiffness and accurate torque holding — otherwise streaks and coating irregularities appear on the fabric. Helical H-series BONENG gearboxes or general-purpose GUOMAO/HUALI units rated 22–160 kW are used, often paired with hydraulic roll-loading systems.

• High torsional stiffness (vibration minimization)
• Rated power 22–160 kW
• Service factor of at least 1.8
• Servo control compatibility via incremental encoder
• Ability to operate in tandem (two-roll calender shaft synchronization)

WOLONG high-efficiency YE3/YE4 induction motors rated 22–250 kW drive jet-machine circulation pumps, jigger main drives and stenter-frame fans. Continuous S1 duty with low starting frequency (1–3 per shift), but accurate speed holding via VFD is required — a series with closed-loop speed feedback through an incremental encoder is used.

• Rated power 22–250 kW, IE3/IE4 efficiency
• IP55 minimum, insulation class F with class B temperature rise
• VFD-compatible (NEMA MG1 Part 31 insulation)
• Thermal reserve for continuous S1 duty, 24/7
• Optional encoder for closed-loop control

INOVANCE SV660 / IS620P servo drives with 0.64–55 N·m torque control every shaft of a multi-section machine independently over EtherCAT. This is the baseline architecture for modern lines: yarn tension is held to ±0.5%, and acceleration/deceleration is synchronized between drives to within 1 ms. Used on warping, sizing, needle-punching and spunbond lines.

• Torque 0.64–55 N·m, speed up to 6,000 rpm
• Encoder resolution of at least 23 bits
• EtherCAT bus for drive synchronization
• Positioning accuracy of ±5 arc seconds
• IP65 motor housing

Needle looms deliver 1,000–3,000 strokes per minute through a crank-eccentric drive. A WOLONG ZD-series direct-drive servo motor or an INOVANCE servo with 30–150 N·m torque ensures precise speed holding and fast response to changes in fiber density. Replacing an induction drive with a servo saves up to 35% energy and improves needle-pattern uniformity across the web.

• Torque 30–150 N·m, speed 1,500–3,000 rpm
• Thermal reserve for S6 duty (40% cyclic duration factor)
• IP65 housing with forced-air cooling
• Compatibility with the machine PLC over EtherCAT
• 23-bit absolute encoder

HUALI Y2/YE2 motors rated 0.75–22 kW power auxiliary drives: extraction fans, circulation pumps for liquor preparation, roll-feeding conveyors and rewinder drives. Continuous S1 duty without frequent starts. Carding and beating stations (combustible textile dust) require Ex execution for Zone 22.

• Rated power 0.75–22 kW, IE2/IE3 efficiency
• IP55 for general areas, IP65 for wet shops
• Ex execution for Zone 22 (textile dust) at carding stations
• Insulation class F with class B temperature rise
• VFD operation capability

INVT GD200A / GD350 VFDs rated 0.75–315 kW are used on general variable-speed drives: pumps, fans, conveyors and main drives of auxiliary equipment. Sensorless vector control delivers ±0.5% speed-holding accuracy without an encoder — enough for the majority of continuous drives in textile production.

• Rated power 0.75–315 kW, supply voltage 380 V
• Sensorless vector control, ±0.5% accuracy
• Built-in braking unit up to 30 kW
• Modbus RTU / Profinet bus for PLC communication
• IP21 cabinet version, optional IP54 built-in execution

DONLY hydraulic power units with 7.5–55 kW pumps deliver 16–25 MPa for calender pressing rolls, post-dye squeeze rolls and mercerizing machines. Oil filtration to ISO 4406 17/15/12 is required, because textile fibers can enter the circuit through seals and quickly clog fine filters.

• Working pressure 16–25 MPa
• Flow rate 30–250 L/min
• Oil filtration to ISO 4406 class 17/15/12
• Oil cooler (for continuous duty)
• Pressure and temperature monitoring reported to the PLC

DEO DFL/DFLA plate heat exchangers cool dye liquors (from a 130°C cook down to 60°C before discharge) and the oil of forced-lube circuits on large gearboxes. On stenter dryers they are used to recover heat from exhaust air, delivering 15–25% fuel savings.

• Thermal capacity 50–800 kW
• Working pressure 1.0–1.6 MPa
• Plate material AISI 316 (resistant to dyes)
• EPDM or FKM gaskets
• Easy disassembly for cleaning out textile fibers

A modern warping or sizing machine is run by a PLC controlling 30–60 servo drives on a single EtherCAT bus. INOVANCE AM600 or AC700 PLCs are used, with native EtherCAT support and matching servo drives. This delivers a single-vendor system — commissioning and service are simpler than with a mixed-brand drive integration.

• PLC with EtherCAT support (minimum 32 axes)
• 10–15 inch HMI, IP65 on the front panel
• Modbus TCP / Profinet support for MES integration
• Program cycle time of 1 ms or better
• PLC power redundancy (UPS)

YONGJING LX (LMC) and LONGXUAN HL pin-bush flexible couplings with elastomer bushes cover 0.1–25 kN·m torque. They damp load pulsations and compensate 0.2–1.0 mm radial misalignment between the motor and the stenter gearbox. Bushes are made of NBR or polyurethane — the choice depends on the installation zone temperature (NBR up to +80°C, PU up to +110°C).

• Torque 0.1–25 kN·m
• Radial misalignment compensation 0.2–1.0 mm
• NBR bushes (standard) or PU (hot zones)
• Bush service life of at least 30,000 h
• G6.3 balancing above 1,500 rpm

Servo drives on warping and needle-punching machines use YONGJING bellows and jaw couplings with zero backlash and torque from 1 to 500 N·m. Long machines — a 12–18 m warping line — carry up to 8 couplings on one shaft train, and the cumulative backlash of the whole chain must stay under 0.1° to hold yarn tension to ±0.5%.

• Zero backlash
• Torque 1–500 N·m
• Compact form factor (housing length up to 80 mm for sizes up to 50 N·m)
• Temperature rating up to +120°C
• G2.5 balancing above 3,000 rpm

YONGJING GIICL and LONGXUAN WGZ gear couplings transmit 5–125 kN·m between the motor and the calender gearbox, compensating up to 1° angular misalignment and 6–10 mm axial offset. Grease lubrication through a fitting with a 6-month service interval. Dye-machine duty calls for sealing that keeps steam and dye liquor out of the tooth ring.

• Torque 5–125 kN·m
• Angular misalignment compensation up to 1°
• Grease lubrication, 6-month service interval
• Sealing protected against steam and humidity
• G6.3 balancing

Compact gearmotors on frame machines (sizing, finishing) use miniature LONGXUAN ML / YONGJING LMS flexible couplings with 10–500 N·m torque and 60–120 mm housing length. This allows a drive to fit into the 250–400 mm envelope between machine sections. They cushion starts and compensate small post-warm-up misalignments.

• Torque 10–500 N·m
• Housing length 60–120 mm (for sizes up to 100 N·m)
• Misalignment compensation 0.1–0.5 mm
• NBR/PU bushes, 30,000 h service life
• On-site bush replacement without removing the shafts