ML2 Double Flange Jaw Coupling | 2000 N·m, 5000 RPM, LMS Type

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ML2 Double Flange Jaw Coupling – 45# Steel, 2000 N·m, 5000 RPM, GB/T5272-2002

Model Number
Check below, custom

Product Description

ML2 Double Flange Jaw Coupling – 45# Steel, High Torque, for Printing & Machine Tools

The Apexcoupling ML2 Double Flange Jaw Coupling (LMS type) is a high-performance flexible coupling designed for demanding industrial applications. Featuring 45# steel hubs with a robust double flange design, this coupling delivers high torque capacity (2000 N·m) and reliable power transmission. The polyurethane spider element provides excellent vibration damping, shock absorption, and misalignment compensation – all without the need for lubrication. Manufactured to the GB/T5272-2002 standard, this coupling is the ideal solution for printing machinery, machine tools, conveyors, fans, pumps, and general industrial equipment requiring frequent starting, reversing, and high reliability.

✅ Double flange design for secure mounting. Maintenance-free – no lubrication required. 45# steel construction for durability and long service life. Ideal for frequent start/stop and reversing applications.

Key Technical Specifications

Parameter	Value
Brand	Apexcoupling
Model	ML2 (LMS Type – Double Flange)
Standard	GB/T5272-2002 (replaces GB5272-85)
Structure	LMS – Double flange jaw coupling
Hub Material	45# carbon steel
Surface Treatment	Oxidation (black oxide)
Spider Material	Polyurethane (PU)
Spider Hardness	≥75 Shore A
Rated Torque	2000 N·m (max torque 8200 N·m)
Maximum Speed	5000 RPM
Bore Diameter	30 mm (custom available)
Bore Tolerance	H7
Operating Temperature	-35°C to +80°C
Nominal Torque Range	16 – 25000 N·m
Lubrication	None required – maintenance-free
Design	Double flange (LMS type) with bolt-on flange connection
Customization	OEM – custom bores, keyways, and materials
Applicable Industries	Printing shops, machine tools, construction, energy & mining, building material, manufacturing
Place of Origin	Guangdong, China

🔧 Custom bores and keyways available. Contact us with your specifications.

LMS Type (Double Flange) – Key Features

The LMS (double flange) type is one of five standard configurations under GB/T5272-2002, alongside LM (basic), LMD (single flange), LMZ-I, and LMZ-II . Its key features include:

Feature	Benefit
Double Flange Design	Flanges are bolted to the hubs, providing a secure and rigid connection .
Bolt-On Connection	Facilitates easy installation and disassembly.
Robust Construction	Suitable for applications requiring high reliability.
Standardized Design	Interchangeable with other LMS type couplings.

💡 The LMS (double flange) type is ideal for applications where a secure, bolted flange connection is preferred over a direct hub-to-hub mounting.

Product Features & Advantages

Advantage	Benefit
45# Steel Construction	High strength, excellent wear resistance, and long service life .
Polyurethane Spider	Absorbs shock and vibration, compensates for misalignment, and requires no lubrication .
Double Flange Design	Provides a secure and rigid connection, ideal for demanding applications .
Maintenance-Free	No lubrication required – reduces operating costs .
High Torque Capacity	2000 N·m rated torque – suitable for medium to heavy-duty applications.
H7 Precision Bore	High concentricity and accurate shaft fit – reduces vibration.
Wide Operating Temperature	-35°C to +80°C – suitable for diverse environments .
Excellent Misalignment Compensation	Compensates for angular, radial, and axial misalignment .
Frequent Start/Stop Capability	Ideal for applications with frequent starting and reversing .
OEM Customization	Custom bores, keyways, and materials available.
Standard Compliant	Manufactured to GB/T5272-2002 .

Product Structure

Two 45# Steel Hubs – Precision-machined with H7 bores and keyways.
Polyurethane Spider – The elastomeric element that transmits torque and absorbs shock.
Double Flange Connection – Flanges are bolted to the hubs, providing a secure and rigid connection .
Flange Bolts & Nuts – Secure the flanges to the hubs.

💡 How it works: The ML2 double flange coupling consists of two hubs with convex jaws, connected by a polyurethane spider. The spider engages with the jaws, transmitting torque through radial compression. The double flanges are bolted to the hubs, providing a secure connection. The spider flexes to absorb shock, dampen vibration, and compensate for misalignment, protecting connected equipment. The coupling requires no lubrication and is maintenance-free.

Applications

Printing Machinery – Register control, high-speed operation
Machine Tools – CNC machines, lathes, milling machines
Conveyors – Material handling systems
Fans & Blowers – Industrial ventilation
Pumps – Centrifugal, gear, and diaphragm pumps
Compressors – Air and gas compressors
Mixers – Industrial mixing equipment
Metallurgical Equipment – Rolling mills, continuous casting
Mining Equipment – Crushers, feeders, conveyors
Food & Beverage Processing – Hygienic, reliable drives

Why Choose Apex Coupling for ML2 Double Flange Couplings?

Advantage	Description
Factory Direct	Competitive B2B pricing – no middlemen
Premium 45# Steel	High strength, durability, and wear resistance
Double Flange Design	Secure and rigid connection for demanding applications
Maintenance-Free	No lubrication required – reduces operating costs
High Torque Capacity	2000 N·m – suitable for medium to heavy-duty applications
OEM Customization	Custom bores, keyways, and materials
GB/T5272-2002 Standard	Manufactured to established Chinese national standard
ISO9001 Certified	Quality assured manufacturing

FAQ

Q: What is an ML2 double flange jaw coupling?
A: The ML2 double flange jaw coupling (LMS type) is a flexible coupling with 45# steel hubs, a polyurethane spider, and bolted flange connections. It transmits torque, absorbs shock, and compensates for misalignment without requiring lubrication .

Q: What is the difference between ML, LMD, and LMS types?
A: Under GB/T5272-2002, ML is the basic type, LMD is the single flange type, and LMS is the double flange type . The LMS type offers a secure bolted flange connection.

Q: What materials are used?
A: The hubs are made of 45# carbon steel with an oxidation finish. The spider is made of polyurethane (PU) .

Q: What is the torque and speed rating?
A: Rated torque is 2000 N·m (max 8200 N·m), and maximum speed is 5000 RPM.

Q: Does the coupling require lubrication?
A: No. The ML2 coupling is maintenance-free – no lubrication required .

Q: What is the operating temperature range?
A: The standard operating temperature range is -35°C to +80°C .

Q: What misalignment can the coupling compensate for?
A: The coupling compensates for angular, radial, and axial misalignment .

Q: Is this coupling suitable for frequent starting and reversing?
A: Yes. The ML2 coupling is ideal for applications with frequent starting, stopping, and reversing .

Q: What standard is this coupling manufactured to?
A: The ML2 coupling is manufactured to GB/T5272-2002 (replacing GB5272-85) .

Q: Can I get a custom coupling?
A: Yes. We offer OEM customization – custom bores, keyways, and materials available.

Request a Quote

Send us your bore size, torque, speed, and application details. Our engineers will recommend the optimal model and provide a quotation within 24 hours.