Cardan Shaft Manufacturers in India

PTC Drivelines is one of the trusted and reputed Cardan Shaft Suppliers in India that understand that supplying a shaft that merely matches an OEM part number is not enough—every application has its own operating conditions, dimensions, torque specifications, and installation requirements. 

We supply cardan shaft assemblies for SAN/Ventra W12, W18, and W38 locomotives, as well as industrial applications such as heavy-duty process machinery, sugar mills, cement plants, and rolling mills.

Before supplying a replacement, we account for the locomotive or equipment model, cross-bearing specification, yoke bore, journal dimensions, flange configuration, shaft length, and operating load—an application-led approach that ensures the shaft supplied fits the exact drivetrain configuration. 

Locomotive cardan shafts (W12/W18/W38) are a safety-critical element of railway operations. As a cardan shaft supplier India relies on, PTC provides every unit with Indian Railways-compliant material certification, dimensional inspection, and full traceability documentation. Contact us for current lead time and availability.

Understanding the Cardan Shaft

Also known as: Cardan Shaft Assembly, Drive Shaft, Driveline Cardan, Transmission Shaft

A driveline shaft fitted with universal joints at each end, carrying torque between two shafts that are not parallel, is known as a cardan shaft or cardan joint shaft. In locomotive applications, the cardan shaft transmits torque from the traction motor to the axle gearbox.

PTC is a manufacturer of cardan shafts in India and supplies SAN/Ventra cardan shaft India assemblies in W12, W18, and W38 sizes—critical driveline components fitted between the traction motor and the bogie axle gearbox on diesel locomotives. The W designation refers to the bearing cross size; the W38 sits at the top of the range for cardan torque capacity.

As an industrial cardan shaft manufacturer India relies on, PTC also builds shafts for steel rolling mills, paper mills, cement plant drives, and sugar mill crushers, each manufactured to customer specification and drawing.

The cardan shaft is built around a universal joint at each end, allowing two shafts to rotate independently of one another. The cross journal rotates inside the cross. journals fitted into the bearing cups, allowing torque to be transferred regardless of suspension movement, mounting geometry, or bogie articulation—all of which can change the angle between the shafts.

Are You Looking for Trusted Cardan Shaft Manufacturers in India? Then You Are at the Right Place

PTC Drivelines is a reputable Cardan Shaft Manufacturers India or we can also say locomotive cardan shaft manufacturer India relies on for SAN/Ventra W12, W18, and W38 diesel locomotives used by Indian Railways and for rolling mills, cement plants, and process machinery across industries. Every traction motor cardan shaft India order is manufactured to railway specifications, with complete material and dimensional details supplied.

As a specialist manufacturer of the W12 W18 W38 cardan shaft India range, PTC supplies both standard locomotive assemblies and custom industrial drivelines from a single Chennai-based facility.

As an established Indian Railways cardan shaft manufacturer, we also support customers with dimensional inspection, material documentation, and the technical information needed for procurement and maintenance. PTC Drivelines assists from identification through to supply for both standard locomotive assemblies and custom-built industrial cardan shafts.

• 3 W-Series Sizes
• 40+ Years Loco Experience
• 100% Documentation
• SAN/Ventra W12 Locomotive
• SAN/Ventra W18 Locomotive
• SAN/Ventra W38 Locomotive
• Indian Railways Compliant
• Full Documentation Standard
• PTC Manufacturing Standard

These are our manufacturing standards:

• Precision-machined cross journals
• Precision-fitted yoke bores
• Full assembly supplied with cross bearings fitted
• Balanced to the appropriate standard
• Railway-grade material with complete traceability
• Supplied as a complete, ready-to-fit replacement assembly

OEM Part Number Cross-Reference Table

Total OEM Entries: 3 · Brands: LOCO

Cardan Shaft Types

There are 2 types of cardan shafts: 

1. Standard Locomotive Cardan Shaft (W-Series)

Maintained on Indian Railways' regular inspection and maintenance cycles, supplied as a complete assembly with cross journals, bearings, yokes, and full documentation, and available for W12, W18, or W38 duty.

2. Industrial Cardan Shaft

Custom-built for rolling mills, cement plants, sugar mill crushers, and paper mill drives, designed for high torque, reversing load, and continuous-duty service.

Technical Specifications & Comparison

Industries & Applications

Some of the industrial applications are:

Locomotive Applications

These are some of the locomotive applications of a cardan shaft: 

• SAN/Ventra W12 cardan shaft—for lower-power Indian Railways' diesel locomotives transmit traction motor power to the bogie axle gearbox as a complete replacement assembly. We provide the best SAN Ventra cardan shaft India
• W18 cardan shaft India—a higher torque rating class than the W12, supplied complete with W18 cross bearings (460-02-010 series).
• As a W38 cardan shaft manufacturer India, PTC produces this unit for the highest-torque W38-class Indian Railways locomotives—a safety-critical part supplied complete with W38 cross bearings (460-02-020 series).

Industrial Applications

These are some of the industrial applications of cardan shafts: 

• Steel plant rolling mills—cardan shafts for continuous rolling mill stand drives, custom to drawing, length, and flange, built for reversing-load, high-torque duty.
• Cement plant drives—cardan shafts for cement mills, kiln drives, and separator drives; industrial-grade and made to plant specification.
• Sugar mill crusher drives, paper mill drives, pump drives, and fan drives—custom cardan shaft assemblies with cross bearings built to customer specification and drawing.

Quality Documentation—Supplied with Every Order

Here are the quality documentation you found with every order:

• ISO 9001:2015 Certificate (Cert. No. IN/17/4015) covering cardan shaft manufacturing from material selection through machining, assembly, inspection, and dispatch.
• Railway Compliance Certificate for W-series locomotive cardan shafts, confirming material and dimensional conformance to Indian Railways specifications for the SAN/Ventra traction system.
• Signed dimensional inspection report covering shaft length, journal dimensions, yoke bore dimensions, installed cross-bearing clearance, and flange geometry.
• Steel mill certificate for shaft tube and journal material, covering alloy grade, heat number, chemical composition, and mechanical properties.

Common Causes of Cardan Shaft Failure

These are some causes of cardan shaft failure:

• Insufficient lubrication—wears journals and bearings faster due to lack of grease.
• Misalignment—too great an operating angle between the traction motor and gearbox increases load on bearings and the yoke.
• Running beyond rated capacity (overload / over-torque) can overstrain the cross journals and yoke bores.
• Contamination—dust and moisture entering the bearing area diminish lubrication and increase wear.
• Poor installation—yoke misfits or bearing-seating errors result in early failure.
• Imbalance—Vibration from an unbalanced shaft assembly wears out the driveline over time.
• Wrong replacement part—mismatched journal size, yoke bore, or bearing spec compromises fitment and reliability.

How Does a Locomotive Cardan Shaft Work?

A cardan shaft is the mechanical connection between the traction motor and the axle gearbox that allows the two connected parts to operate at an angle to one another. Because of bogie movement, suspension travel, and operating conditions, it is rarely possible to keep the traction motor and gearbox perfectly aligned on a diesel locomotive. The cardan shaft absorbs this angular movement while continuing to carry substantial torque.

The shaft accommodates this changing operating angle through its universal joints, yokes, cross assemblies, bearing cups, and tubular shaft body. The yoke is the input point, where torque from the motor enters the shaft. The universal joint allows the shaft to articulate, and the shaft body carries the rotational force onto the axle gearbox—torque is then passed into the gearbox and finally to the locomotive axle through the opposite universal joint.

Correctly fitted bearings, properly sized journals, accurate yoke geometry, shaft balance, material quality, and operating angle all matter for W12, W18, and W38 locomotive use. A correctly manufactured cardan shaft does more than connect two rotating components—it ensures reliable power transfer through variable operating conditions.

Cardan Shaft Power Transmission — Step by Step

These are the steps included in cardan shaft transmission:

1. The traction system (traction motor) produces torque—the rotational power generated by the locomotive's traction system.
2. This torque is passed to the input yoke, which begins the rotation of the shaft.
3. The cross-and-bearing assembly allows the shaft to move angularly without restriction.
4. The tubular shaft body carries the torque onward toward the axle gearbox.
5. The second universal joint compensates for motion — as the first joint moves, the second ensures torque is still transmitted at the required operating angle.
6. The axle gearbox receives the torque and transfers it on to the wheelset.

This is a continuous transmission cycle, which is why the condition of the cardan shaft has a direct impact on drivetrain reliability, vibration levels, and overall locomotive operating performance.

Don’t Ignore These Cardan Shaft Warning Signs 

A cardan shaft rarely fails without warning. Performance degrades gradually through wear, poor operating conditions, lubrication issues, overloading, misalignment, or bearing deterioration. Recognizing the early symptoms during routine railway maintenance helps avoid consequential damage to the rest of the drivetrain.

• Unusual vibration during locomotive operation
• Knocking or metallic noise from the universal joint area
• Excessive play in the cross-and-bearing assembly
• Worn or damaged bearing cups
• Overheating around the bearing areas
• Visible cracks or deformation around the yoke or shaft
• Lubricant leakage or loss
• Uneven or non-uniform journal wear
• Damaged or loose flange connections
• Vibration that increases with rotational speed
• Reduced smoothness of torque transmission
• Any sign of imbalance following repair or component replacement

Leaving these symptoms unaddressed can lead to excessive loading on the gearbox, the traction motor connection, the bearings, and other driveline components.

Why Cardan Shafts Fail

A locomotive operates in a dynamic environment, with the cardan shaft subject to repeated torque, vibration, angular motion, and changing load. Failure typically stems from a combination of lubrication, mechanical, installation, and operating factors.

1. Bearing and Journal Wear

The cross-and-bearing assembly is under continuous load. Journal and bearing surfaces wear from inadequate lubrication, contamination, excess clearance, or prolonged service—and vibration and impact loading tend to rise as clearance increases.

2. Misalignment

Operating angles beyond the design range place additional load on the universal joint. Installation issues, gearbox movement, mounting problems, or changes in driveline geometry all accelerate early wear.

3. Shock Loading and Overload

Repeated high-torque operation, sudden load changes, or loads exceeding the shaft's rated duty puts excessive stress on the tube, cross journals, yokes, and flange connections.

4. Lubrication Problems

Grease deterioration, insufficient lubrication, the wrong lubricant, or lubricant contamination all increase friction and accelerate wear or damage to bearings and journals.

5. Incorrect Fitment

A replacement cardan shaft should match the required unit in size, bearing layout, yoke shape, flange dimensions, and duty. A mismatched part may appear to fit but can still cause excessive vibration or wear.

6. Imbalance

A rotating shaft that is not properly balanced causes vibration at running speed. Over time, this vibration leads to fatigue and premature wear of the shaft and associated parts.

7. Material or Manufacturing Defects

For a safety-critical driveline part, material quality, machining accuracy, heat treatment, dimensional control, and traceability all matter—manufacturing inconsistencies can directly affect service reliability.

The Consequences of Running a Worn Cardan Shaft

A worn cardan shaft rarely fails in isolation—excessive play or imbalance passes extra vibration and impact loading on to the rest of the drivetrain. 

Continued operation can lead to:

• Increased vibration through the driveline
• Accelerated universal-joint wear
• Damage to yokes and bearing seats
• Higher load on gearbox components
• Damage to flange connections
• Secondary drivetrain failures
• Unexpected locomotive downtime
• Rising maintenance and replacement costs

For this reason, cardan shaft inspection is best treated as part of planned locomotive maintenance, rather than something addressed only after the component fails.

Inspecting a Cardan Shaft Before Replacement

Before replacing a locomotive cardan shaft, maintenance personnel should establish the actual usage and condition. 

Inspection should cover:

• Overall shaft condition
• Shaft length and mounting specification
• Universal-joint condition
• Cross-journal wear
• Bearing clearance
• Yoke bore condition
• Flange face and bolt-hole geometry
• Lubrication condition
• Signs of cracks or deformation
• Recorded vibration history and shaft balance
• The OEM or railway-supplied part number
• The duty or locomotive model the shaft applies to

To help PTC identify the correct configuration for a replacement inquiry, please share the locomotive model, existing shaft dimensions, OEM/reference number, drawings, photographs, and any original supply details.

Why PTC Drivelines

Choosing a cardan shaft manufacturer India buyers can rely on is far more than matching shafts on length or flange. In locomotive and industrial driveline applications, dimensional accuracy, correct material selection, controlled assembly, and full traceability and verification of the delivered component all matter.

PTC Drivelines specializes in these requirements across the W12, W18, and W38 locomotive and industrial cardan shaft range.

Application-Focused Manufacturing

PTC builds cardan shaft assemblies for specific locomotive and industrial applications—not every shaft is the same. Shaft dimensions, universal-joint configuration, bearing arrangement, flange geometry, and duty requirements are all factored into production.

Complete Cardan Shaft Assemblies

PTC supplies complete assemblies configured for a given application, including the necessary yokes, cross-and-bearing assemblies, and related components.

Dimensional Control

Shaft length, journal dimensions, yoke bores, bearing clearances, and flange geometry are all critical dimensions, controlled to ensure correct installation and operation.

Material Traceability

Material documentation is a valuable record of the steel and manufacturing process for railway applications. PTC provides material and inspection documentation as required by the order.

W12, W18, and W38 Capability

Locomotive maintenance and procurement teams can source the full W12, W18, and W38 cardan shaft India range from a single specialist supplier.

Documentation Support

Well-organized technical documentation makes procurement, inspection, and maintenance of every railway component easier. PTC backs orders with the relevant dimensional inspection, material certification, and compliance paperwork.

Replacement and Custom Manufacturing

Cardan shafts can be produced to customer drawings, dimensions, operating requirements, and equipment configuration for industrial applications—including rolling mills, cement plants, sugar mills, paper mills, and other heavy-duty plants.

What Makes a Good Locomotive Cardan Shaft?

A successful locomotive cardan shaft does more than transmit torque—it must maintain dimensional stability and mechanical strength under repetitive rotational loads and varying shaft angles. 

Key characteristics include the following:

• Correctly sized shaft and universal joints
• High-quality cross journals
• Proper bearing fit and clearance
• Accurate yoke machining
• Correct flange geometry
• Suitable material properties
• Controlled assembly
• Proper shaft balancing
• Dimensional inspection
• Material traceability
• Application-specific configuration

Together, these elements determine the cardan shaft's reliability over its service life.

What to Send for a Replacement Cardan Shaft

Locomotive maintenance teams can speed up identification and quotation by sharing:

• Locomotive: SAN/Ventra
• Cardan shaft type: W12 / W18 / W38
• OEM / reference part number (if available)
• Shaft length of the existing assembly
• Flange details — bolt pattern and dimensions
• Bearing / cross details, if an existing specification is available
• Drawing, if available
• Photographs of the current cardan shaft, including identification markings
• Quantity of assemblies required
• Application: locomotive or industrial equipment

If the specific OEM part is not available, dimensional and application details can still be used to identify the correct replacement configuration.

From Identification to Dispatch

PTC Drivelines follows a structured approach to every cardan shaft requirement:

1. 1. Application Identification—The locomotive model, size, equipment type, or industrial use is established.
2. Technical Verification—part numbers, drawings, dimensions, bearing configuration, flange details, and operating requirements are reviewed.
3. Manufacturing—the shaft is manufactured and assembled to the approved configuration.
4. Inspection—critical dimensions, assembly condition, and applicable quality parameters are checked.
5. Documentation—the relevant inspection and material documentation are prepared to meet order requirements.
6. Dispatch—the completed cardan shaft assembly is dispatched, ready for installation to the agreed-upon specification.

Trusted Cardan Shaft Exporters in India

PTC Drivelines is a trusted Cardan Shaft Exporters in India, supplying SAN/Ventra W12, W18, and W38 locomotive cardan shaft assemblies and custom industrial driveline shafts to international markets. Our export-ready assemblies are manufactured for demanding railway, rolling mill, cement, sugar, paper, and heavy industrial applications. Each shaft undergoes dimensional inspection, controlled assembly, and applicable balancing checks before dispatch. 

As an experienced locomotive cardan shaft exporter in India, PTC provides material traceability, inspection reports, and relevant quality documentation to support international procurement requirements. We also manufacture custom cardan shafts based on drawings, dimensions, flange configurations, and operating requirements for global customers.

Built to the Driveline's Requirements, Not Just the Shaft

The cardan shaft is a fundamental part of the drivetrain that is designed to transmit torque with reliability and accommodate angular motion, vibration, and load changes. The precision machining, universal-joint fitting, balancing, and inspection are performed by PTC Drivelines for the manufacture of application-specific cardan shafts.

Every shaft is engineered to satisfy specific application needs, ranging from SAN/Ventra W12, W18, and W38 locomotive shafts to custom-made industrial assemblies.

Looking for the correct cardan shaft to suit your application? Contact PTC Drivelines today!