50kg Welding Positioner – Variable Speed Rotary Welding Table
The MECBASE 50kg Welding Positioner is a compact and versatile rotary welding table designed for pipe, flange, fitting and circumferential welding applications.
Featuring a 50 kg horizontal load capacity, Ø320 mm rotary table, 1–15 rpm variable speed and 0–90° tilting range, the positioner allows operators to rotate and position workpieces at an optimal welding angle for better control and more consistent welds.
Compatible with 125 mm, 200 mm and 300 mm welding chucks, the unit can be configured as a complete rotary welding system for TIG, MIG/MAG and CO₂ welding.
Key Features
- 50 kg horizontal load capacity
- 25 kg vertical load capacity
- Ø320 mm rotary worktable
- 1–15 rpm stepless variable speed
- 0–90° adjustable table tilt
- 120 W DC motor
- Foot pedal start/stop control
- Up to 300 A welding grounding capacity
- Compatible with 125 / 200 / 300 mm welding chucks
- Forward and reverse rotation
- Optional low-speed configuration
- Optional torch holder and tailstock
- Optional PLC / automatic welding control
- Compact design for workshop and production use
Technical Specifications
| Parameter | Specification | Parameter | Specification |
| Horizontal Load Capacity | 50 kg | Vertical Load Capacity | 25 kg |
| Worktable Diameter | Ø320 mm | Tilting Angle | 0–90° |
| Rotation Speed | 1–15 rpm | Optional Low Speed | 0.2–2.5 rpm |
| Motor Type | DC Motor | Motor Power | 120 W |
| Speed Control | Stepless Variable | Rotation Direction | Forward / Reverse |
| Compatible Chuck | 125 / 200 / 300 mm | Grounding Capacity | Up to 300 A |
| Control Method | Panel + Foot Pedal | Table Adjustment | Manual Tilt |
| Machine Dimensions | Approx. 380 × 360 × 400 mm | Machine Weight | Approx. 35 kg |
Specifications and configurations can be customized according to application requirements.
Variable Speed Rotary Welding Table
The MECBASE 50kg welding positioner uses a 120 W DC drive system with stepless speed adjustment, providing smooth and stable workpiece rotation.
The standard 1–15 rpm speed range allows operators to select the appropriate rotation speed according to workpiece diameter, material and welding process.
For larger-diameter workpieces or applications requiring particularly slow travel speeds, an optional 0.2–2.5 rpm low-speed configuration is available.
Forward and reverse rotation provides additional flexibility for different welding directions and operator preferences.
Benefits
- Smooth workpiece rotation
- Precise welding speed adjustment
- Stable low-speed performance
- Better control of circumferential welds
- Improved weld consistency
- Reduced manual workpiece handling
0–90° Tilting Worktable
The rotary worktable can be tilted from 0° to 90°, allowing the operator to position the weld joint at a more suitable working angle.
This is particularly useful for pipe, flange and circular components where maintaining an optimal torch-to-workpiece relationship can improve welding efficiency and operator comfort.
The mechanical tilting system provides secure positioning and convenient angle adjustment.
Heavy-Duty Ø320 mm Worktable
The Ø320 mm precision-machined rotary table provides a stable mounting platform for workpieces, fixtures and welding chucks.
Its robust construction helps maintain smooth rotation during welding while providing sufficient mounting area for a wide variety of small and medium-sized components.
Different chuck configurations can be installed depending on workpiece diameter and clamping requirements.
Welding Positioner with Chuck
One of the key advantages of the MECBASE 50kg welding positioner is its compatibility with different welding chucks.
Recommended chuck sizes include:
- 125 mm Welding Chuck
- Suitable for smaller pipes, fittings and precision components where compact clamping and low rotating mass are preferred.
- 200 mm Welding Chuck
- A versatile option for general pipe, flange and fabrication work. It provides a good balance between clamping range and overall system size.
- 300 mm Welding Chuck
- Suitable for larger-diameter workpieces requiring greater clamping capacity.
MECBASE can supply the positioner and welding chuck together as a complete system, helping ensure correct mounting and compatibility.
Foot Pedal Control
A foot pedal provides convenient start/stop control during welding.
The operator can start or stop workpiece rotation without removing their hands from the welding torch or workpiece.
This is particularly useful for manual TIG and MIG circumferential welding, where precise coordination between torch position and workpiece rotation is important.
High-Current Welding Ground System
The positioner incorporates a high-copper conductive carbon brush assembly to provide reliable current transmission between the rotating worktable and welding ground.
The grounding system supports welding currents up to approximately 300 A, making the unit suitable for a wide range of TIG, MIG/MAG and CO₂ welding applications.
Reliable grounding helps maintain stable electrical contact while the workpiece rotates.
DC Motor & Stepless Speed Control
A 120 W DC motor provides smooth rotary motion and precise speed adjustment.
The control panel allows the operator to adjust table speed according to the welding process.
The drive system provides:
- Stepless speed adjustment
- Forward/reverse rotation
- Smooth acceleration
- Stable low-speed rotation
- Simple operator control
This makes the positioner suitable for both manual and semi-automatic welding operations.
Complete Function Control Panel
The side-mounted control panel integrates the primary operating functions into a compact and accessible layout.
Depending on configuration, controls can include:
- Power ON/OFF
- Rotation speed adjustment
- Forward/reverse selection
- Foot pedal control
- Rotation start/stop
The straightforward control layout makes the positioner easy to operate in both workshop and production environments.
Optional PLC / Automatic Welding Control
For repetitive or automated welding applications, the MECBASE 50kg welding positioner can be supplied with an upgraded control system.
Optional functions can include:
- PLC control
- Touch-screen HMI
- Programmable rotation speed
- Programmable rotation angle
- Welding-time control
- Automatic start/stop sequence
- Torch movement control
- Pneumatic torch control
- Parameter storage
- Automated welding cycle
These options allow the positioner to become part of a semi-automatic or automatic circumferential welding system.
Optional Equipment
MECBASE can configure the positioner according to the workpiece and welding process.
Combining the positioner, chuck, torch holder and tailstock provides a more complete solution for repetitive circumferential welding.
Welding Chucks
- 125 mm Welding Chuck
- 200 mm Welding Chuck
- 300 mm Welding Chuck
- 3-Jaw Welding Chuck
- 4-Jaw Welding Chuck
Welding Accessories
- Manual Welding Torch Holder
- Pneumatic Welding Torch Holder
- Adjustable Torch Stand
- Tailstock
- Pneumatic Tailstock
- Roller Support
- Workpiece Support Stand
- Welding Control Box
Typical Applications
The MECBASE 50kg rotary welding positioner is suitable for:
- Pipe circumferential welding
- Tube welding
- Flange welding
- Pipe fitting welding
- Elbow and fitting fabrication
- Tank components
- Cylinder components
- Ring welding
- Small pressure vessel components
- Small fabrication assemblies
- TIG welding
- MIG/MAG welding
- CO₂ welding
- Plasma welding
- Grinding
- Cutting
- Assembly
Ideal for TIG & MIG Circumferential Welding
During circumferential welding, maintaining a consistent travel speed can directly affect weld appearance and repeatability.
Instead of manually moving the welding torch around a stationary pipe, the workpiece can rotate at a controlled speed while the torch remains in an optimized welding position.
This can help provide:
- More consistent welding speed
- More uniform weld appearance
- Better torch control
- Improved operator comfort
- Reduced manual handling
- Better repeatability
- Higher productivity
When combined with a fixed or adjustable torch holder, the positioner can also support semi-automatic circumferential welding.
Why Choose MECBASE 50kg Welding Positioner?
MECBASE focuses on practical rotary welding and workholding solutions.
Instead of supplying only a standalone welding turntable, we can configure the positioner together with the appropriate welding chuck, torch holder, tailstock and workpiece support according to your actual application.
- Complete Welding Solution
- Positioner + Welding Chuck + Torch Holder + Tailstock
- This provides customers with a more integrated solution for pipe and circumferential welding.
- Flexible Chuck Options
- Choose from 125 mm, 200 mm or 300 mm welding chucks according to workpiece diameter and clamping requirements.
- Variable Speed Control
- Stepless rotary speed adjustment helps match table rotation to workpiece diameter and required welding travel speed.
- Compact & Practical
- The compact benchtop design makes the 50kg positioner suitable for workshops, fabrication shops, maintenance facilities and production lines.
- Custom Configurations
- Special rotation speeds, chuck configurations, fixtures and automatic control systems can be supplied according to application requirements.
How to Select the Right Welding Positioner
When selecting a welding positioner, workpiece weight alone is not enough.
Please provide:
Workpiece Diameter + Length + Weight + Welding Process
For example:
Pipe OD: 150 mm
Length: 800 mm
Weight: 18 kg
Process: TIG Circumferential Welding
MECBASE can recommend the appropriate positioner, welding chuck, support system and torch holder based on your application.
How to Select the Right Welding Positioner
When selecting a welding positioner, workpiece weight alone is not enough.
Please provide:
Workpiece Diameter + Length + Weight + Welding Process
For example:
Pipe OD: 150 mm
Length: 800 mm
Weight: 18 kg
Process: TIG Circumferential Welding
MECBASE can recommend the appropriate positioner, welding chuck, support system and torch holder based on your application.
Build Your Rotary Welding System with MECBASE
Whether you need a simple benchtop welding turntable or a complete circumferential welding system, MECBASE can help select the right configuration.
A typical system can include:
50kg Welding Positioner + Welding Chuck + Torch Holder + Tailstock / Workpiece Support
Send us your workpiece drawing, diameter, length, weight and welding process, and we will recommend a suitable configuration.
Request a Quote
Looking for a reliable 50kg welding positioner or rotary welding table?
Contact MECBASE with your application details for pricing, technical recommendations and OEM configurations.
MECBASE 50kg Welding Positioner
Compact Size · Stable Rotation · Precise Speed Control · Flexible Workholding
Frequently Asked Questions
Do not select a welding positioner based only on workpiece weight. The center of gravity, workpiece diameter, overhang and mounting method also affect the required capacity.
Send MECBASE your workpiece drawing or basic dimensions, and we can help check whether the 50kg model is suitable.
Yes. For components that cannot be securely held with a standard welding chuck, custom mounting plates, jaws, brackets or dedicated fixtures can be designed according to the workpiece.
For short and rigid components, a chuck alone may be sufficient. Longer pipes and shafts may require a tailstock or roller support to reduce overhang and improve rotational stability.
MECBASE can recommend the support arrangement based on the workpiece length and weight distribution.
The required RPM depends mainly on the workpiece diameter and desired welding travel speed.
A useful calculation is:
RPM = Welding Travel Speed ÷ (π × Workpiece Diameter)
Send us your pipe diameter and required welding speed, and MECBASE can help determine the appropriate rotation range.
In many applications, yes. Integration depends on the welding machine, required start/stop signals and level of automation.
For automated systems, MECBASE can evaluate interfaces for positioner rotation, welding power source, torch movement and external control signals.
Yes. Standard or customized jaws can be supplied depending on the workpiece material, diameter and clamping requirements.
Special jaw designs can also be considered when minimizing workpiece marking is important.
The BWJ-30 can be combined with suitable chucks, torch holders and welding equipment. The PLC version provides programmable positioning functions useful for semi-automatic and repetitive welding setups. A complete automatic welding system requires additional welding and control equipment.
For the most accurate recommendation, please provide:
Workpiece drawing or photo
Outside diameter
Length
Weight
Material
Welding process
Required welding speed
Preferred clamping method
Manual, semi-automatic or automatic operation
With this information, MECBASE can recommend the positioner, chuck, fixture and supporting equipment as one complete solution.
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