LONGXUANbrakes & couplings from China
Ningbo Longxuan Machinery Manufacturing Co., Ltd.
Industrial coupling manufacturer. Founded in 2002, 20,000 m² production base in Ningbo. Drum tooth-type couplings, resilient pin couplings, flange couplings, universal joints, diaphragm couplings, braking wheels. Used in metallurgy, mining, wind power, shipbuilding, woodworking.
Brakes & Couplings
GIICL Drum Gear Coupling
GIICL is a narrow-type curved-tooth (drum) gear coupling to JB/T 8854.2-2001 for coaxial horizontal shafts, compensating angular misalignment. The Longxuan catalogue lists 25 sizes GIICL1–GIICL25: rated torque 0.4–4,500 kN·m, bores 16–1,000 mm, permissible speed from 4,000 rpm (GIICL1–GIICL6) down to 460 rpm (GIICL25), operating temperature −20…+80 °C. GIICLZ is a single-engagement version with a rigid flange for an intermediate shaft. The plant also makes LXGIICL-A and LXGIICL-B with dog-tooth and face-tooth flange joints instead of fitted bolts. GOST counterpart: MZ gear couplings.
- Rated torque
- 0.4–4,500 kN·m (25 sizes GIICL1–GIICL25)
- Bore range
- 16–1,000 mm (1,040 mm — non-preferred size)
- Max. speed
- 460–4,000 rpm (depending on size)
- Operating temperature
- −20…+80 °C
- Versions
- GIICL — two gear meshes; GIICLZ — one gear mesh and a rigid flange for an intermediate shaft
- Lubrication
- grease, fill 51–43,000 mL (depending on size)
- Standard
- JB/T 8854.2-2001
- GOST counterpart
- GOST 5006-94, GOST R 50895-96 (MZ gear couplings)
HL/HLL Elastic Pin Coupling
HL is an elastic pin coupling: the hubs are connected by non-metallic pins that cushion shocks and tolerate noticeable axial shaft float. Per the Longxuan catalogue (JB/ZQ 4726-2006), the HL1–HL14 series transmits 250–180,000 N·m with bores 12–340 mm and speeds from 8,500 down to 950 rpm; operating temperature −20…+70 °C, designed for drives with frequent starts. HLL is the same coupling with a Ø200–800 mm brake wheel for shoe brakes: 15 sizes, 560–35,500 N·m, the wheel can be made integral with the hub. In torque, speed and bores the HL series matches LX1–LX14 of GB/T 5014-2003.
- Rated torque
- HL 250–180,000 N·m (HL1–HL14); HLL 560–35,500 N·m (HLL1–HLL15)
- Bore range
- HL 12–340 mm; HLL 20–180 mm
- Max. speed
- HL 950–8,500 rpm; HLL 950–5,600 rpm (depending on size)
- Brake wheel (HLL)
- Ø200–800 mm, width 85–335 mm; integral version available
- Operating temperature
- −20…+70 °C
- Flexible element
- non-metallic pins; noticeable axial shaft float allowed
- Standard
- JB/ZQ 4726-2006 (HL series matches LX1–LX14 of GB/T 5014-2003)
- GOST counterpart
- none direct; nearest class MUVP per GOST 21424-93
YL, JLA/JLB Rigid Flange Couplings
Longxuan rigid couplings: they do not compensate shaft misalignment and require accurate alignment. YL/YLD are flange couplings to GB/T 5843-86 (YLD with a centring spigot): 18 sizes, 10–20,000 N·m, bores 10–180 mm, hubs of cast iron or cast steel. YL-I/II/III to JB/ZQ 4376-2006: 10 sizes, 63–100,000 N·m, bores 22–250 mm. JLA/JLB to JB/ZQ 4377-2006 transmit torque through a radial key between the hubs and are fixed to the shafts with tangential or gib-head keys: 1,000–80,000 N·m, bores 40–250 mm; JLA allows axial movement. Counterpart: GOST 20761-96 flange couplings.
- Type
- rigid couplings — no misalignment compensation, accurate alignment required
- Rated torque
- YL/YLD 10–20,000 N·m; YL-I/II/III 63–100,000 N·m; JLA/JLB 1,000–80,000 N·m
- Bore range
- YL/YLD 10–180 mm; YL-I/II/III 22–250 mm; JLA/JLB 40–250 mm
- Max. speed
- YL/YLD 1,400–8,100 rpm (cast iron), 2,300–13,000 rpm (steel); YL-I/II/III 1,200–6,300 rpm; JLA/JLB — rim speed up to 50 m/s
- Versions
- YL basic, YLD with centring spigot; YL-I with centring tenon, YL-II with centring ring, YL-III without centring; JLA axially movable, JLB fixed
- Shaft connection
- keyed; JLA/JLB with tangential keys (12,500–80,000 N·m) or gib-head keys (1,000–63,000 N·m)
- Standards
- GB/T 5843-86 (YL/YLD), JB/ZQ 4376-2006 (YL-I/II/III), JB/ZQ 4377-2006 (JLA/JLB)
- GOST counterpart
- GOST 20761-96 (flange couplings)
JZM/JZMJ Diaphragm Coupling for Heavy Machinery
JZM is a diaphragm coupling for heavy machinery to JB/ZQ 4717-2006: packs of thin stainless-steel diaphragms (link or one-piece type) are bolted alternately to both hubs, and shaft misalignment is taken up by elastic deformation of the diaphragms. It runs without lubrication or backlash and withstands oil, water and aggressive media. Per the Longxuan catalogue: JZM1–JZM30 — 40–315,000 N·m, bores 14–340 mm, up to 10,700 rpm; JZMJ1–JZMJ36 with spacer shaft — 63–2,000,000 N·m, bores 20–600 mm. Operating temperature −20…+250 °C.
- Rated torque
- JZM 40–315,000 N·m (JZM1–JZM30); JZMJ 63–2,000,000 N·m (JZMJ1–JZMJ36)
- Bore range
- JZM 14–340 mm; JZMJ 20–600 mm
- Max. speed
- JZM 1,050–10,700 rpm; JZMJ 475–9,300 rpm (depending on size)
- Torsional stiffness (JZM)
- 0.37–130.76 × 10⁶ N·m/rad
- Operating temperature
- −20…+250 °C
- Flexible element
- packs of thin stainless-steel diaphragms; no lubrication, no backlash
- Versions
- JZM basic; JZMJ with spacer shaft (length to order)
- Standard
- JB/ZQ 4717-2006; no GOST counterpart
FAQ — LONGXUAN
What equipment does SDS supply from LONGXUAN?
SDS delivers the full LONGXUAN 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 LONGXUAN equipment used?
LONGXUAN equipment is applied in metallurgy, mining & mineral processing, wind energy and shipbuilding 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 LONGXUAN?
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, Zhejiang Province, Ningbo). Delivery to Russia is by road transport. Detailed terms are on the Terms of Cooperation page.
How to order LONGXUAN 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 LONGXUAN?
An SDS engineer will size the unit for your load and quote it — usually within one business day.