WX/WXD Double Universal Joint: High Torque, 45° Angle & Full Customization for Machinery
WX/WXD Double Universal Joint: High Torque, 45° Angle & Full Customization for Machinery
Paragraph 1 – Hook
When your machinery requires power transmission across shafts that are not only misaligned but also far apart, a single universal joint is often insufficient. The solution is a double universal joint – two joints connected by a center shaft. The WX and WXD series (small cross‑axis universal couplings) take this concept further by offering a maximum working angle of 45° per section, nominal torque up to 1120 N·m, and full customization of bore size and profile (keyway, square, hexagon, spline). Manufactured from 42CrMo alloy steel, these double universal joints are the preferred choice for textile machines, construction equipment, food & beverage lines, and agricultural implements.
Paragraph 2 – What Makes the WX/WXD Double Universal Joint Different?
Unlike simple single‑joint couplings that can only handle small angles (typically 15‑25°) and produce speed fluctuations, the WX/WXD double universal joint uses a pin & block construction with two universal joints in series. This design allows a 45° maximum working angle between the input and output shafts – ideal for applications where the motor is mounted on a moving arm or where space constraints force a sharp bend. Moreover, the double joint inherently provides near‑constant angular velocity, meaning the output shaft rotates at the same speed as the input shaft (ignoring variations). This reduces vibration, extends the life of bearings and seals, and improves the accuracy of positioning systems.
Paragraph 3 – Torque Range, Speed & Material: 42CrMo for Heavy Duty
The WX/WXD series covers a nominal torque range from 11.2 N·m to 1120 N·m, making it suitable for everything from small textile spindles to large construction conveyor drives. The material of choice is 42CrMo alloy steel – a chromium‑molybdenum steel known for its high tensile strength (≥1080 MPa), good fatigue resistance, and ability to be heat‑treated to 28‑32 HRC. This ensures that the cross pins, yokes, and blocks withstand repeated shock loads without permanent deformation. All finished bores are machined to H7 tolerance (e.g., for a 20mm shaft, the bore will be 20.000‑20.021 mm), guaranteeing a precise, slip‑fit assembly with minimal runout.
Paragraph 4 – Custom Bore Profiles: Keyway, Square, Hexagon, Spline
One of the biggest advantages of working with an OEM universal joint manufacturer like Apex Coupling is the ability to order non‑standard bores. While standard round bores with keyway and setscrew are common, many machinery designs require:
Square bore – For direct mounting on square shafts (e.g., manual crank handles).
Hexagon bore – For hex drive shafts (common in agricultural PTO connections).
Spline bore – For high‑torque, slip‑fit connections (DIN or ANSI standards available).
Custom profiles – Any shape that can be broached or wire‑EDM cut.
We also offer different shaft fixing methods: keyway + setscrew, double setscrew, or even clamp‑type on request. Simply provide your drawing or desired dimensions, and we will produce the double universal joint exactly to your specification.
Paragraph 5 – Industrial Applications in Detail
Textile Machines – Spinning frames often have multiple shafts that need to be connected at varying angles. WX/WXD double universal joints provide smooth, vibration‑free transmission, reducing yarn breakage.
Construction Works – Concrete pumps, batching plants, and vibratory rollers rely on these joints to transmit power between skid‑mounted components that shift during operation.
Energy & Mining – Conveyors, crushers, and slurry pumps benefit from the 45° angle capacity, allowing motor relocation away from dust or water hazards.
Food & Beverage Shops – Mixers, dough dividers, and bottling lines. Stainless steel version available for washdown environments.
Farms & Agriculture – Augers, feed mixers, hay rakes – the 42CrMo material withstands dust and shock loads.
Restaurant & Retail – Commercial mixers, ice machines, and automated retail displays.
Each industry values the combination of high torque (up to 1120 N·m) and large‑angle capability (45°), which reduces the need for multiple joints or complex belt drives.
Paragraph 6 – How to Select the Right WX/WXD Double Universal Joint: Step‑by‑Step
Determine torque requirement – Calculate the maximum momentary torque (starting torque + shock). Choose a model where nominal torque is at least 1.5x your requirement. Our range: 11.2‑1120 N·m.
Measure shaft diameters – Both input and output shaft diameters (10‑42mm, or custom larger). Specify H7 bore tolerance for precision fit.
Define bore profile – Round with keyway (standard), square, hexagon, spline, or custom.
Check operating angle – Will the angle change dynamically? Our double joint handles up to 45° between shafts. If you need a constant 45°, that’s acceptable, but note that torque capacity may derate slightly at extreme angles – consult our engineering team.
Specify overall length – Standard lengths from 60‑244mm; we can extend or shorten the center shaft to meet your assembly dimensions.
Request a drawing – Send us your sketch; we will provide a 2D CAD drawing for approval before production.
Paragraph 7 – Quality Certifications & Testing
All WX/WXD double universal joints from Apex Coupling are manufactured under ISO9001 and BV certified processes. We provide:
Material certificate (EN 10204 3.1) for 42CrMo steel.
Dimensional inspection report – Including bore H7 tolerance, keyway position, and overall length.
Hardness test report – Cross pins (HRC 28‑32), yokes (HRC 22‑26).
Dynamic angle test – Ensuring smooth rotation at 45°.
Third‑party inspections (SGS, TÜV) can be arranged at buyer’s expense.
Paragraph 8 – OEM/ODM Capabilities: Beyond Standard Sizes
As a specialized China double universal joint manufacturer, we offer:
OEM – We produce to your exact drawing, including custom bore profiles, special materials (stainless steel 304/316), and surface treatments (zinc plating, black oxide, phosphating).
ODM – We design a double universal joint for your new machinery, providing engineering calculations and prototype sample.
OBM – Private labeling with your brand name laser‑engraved on the joint body.
MOQ is as low as 1 piece for prototypes, and sample lead time is typically 7‑10 days. Mass production orders (100+ pieces) ship within 20‑25 days after sample approval.
Paragraph 9 – Why Choose Apex Coupling Over Other Suppliers?
Direct factory pricing – We are the manufacturer, not a trader. Located in Guangdong, China.
Engineering support – Free application review: we help you select the correct torque rating and angle.
Fast turnaround – Large stock of raw materials and semi‑finished yokes means shorter lead times.
Global shipping – We export to North America, Europe, Southeast Asia, the Middle East, and South America.
Customer‑first policy – If our coupling fails due to manufacturing defect within one year, we replace it free of charge.
Paragraph 10 – Conclusion & Call to Action
The WX/WXD double universal joint is a versatile, high‑torque, large‑angle solution for textile machines, construction equipment, food machinery, and many other industrial applications. Manufactured from 42CrMo steel with H7 bores, available with keyway, square, hex, or spline profiles, and fully customizable as OEM/ODM. With a torque range up to 1120 N·m and a working angle up to 45°, this cross‑axis universal coupling will keep your machinery running smoothly.
Ready to order or request a quote?
Contact Ella directly:
📧 ella@apexcoupling.com
🌐 Or fill out our online form with your drawing and specifications: www.apexcoupling.com
