A12 drive and idler units
Loadability up to 6 tons, 12 tons for a pair.
Self-aligning welding rollerbeds
PEMA A Series Self-Aligning Rollerbeds
A12 to A350 drive units, idler units and rail car units
PEMA A series self-aligning rollerbeds handle unbalanced, thin-walled and heavy cylindrical work-pieces with even weight distribution and constant rotation speed, adapting to each diameter without separate adjustment.
Manufactured byPemamek
12–800 tonsLoading capacity range
AutomaticAdjustment to work-piece diameter
2D / 4DDrive units with 2 or 4 driven axles
CEMarking on all PEMA roller beds
Overview
Rollerbeds that align to every diameter
PEMA A series of self-aligning rollerbeds are ideal for handling unbalanced, thin-walled and/or heavy cylindrical work-pieces. They provide even weight distribution, constant rotation speeds and adaptability to a wide range of work-piece diameters without need for separate adjustment. Loading capacities range between 12 and 800 tons.
The range is built from 2D drive units, where both axles are power-driven, 4D drive units, where all four axles are power-driven, idler units and rail car units. Sizes on the official listing are A12, A25, A50, A80, A150 and A350.
PEMA roller beds fulfil the requirements of the European EN safety norm and come with CE markings.
Models
A series sizes
A25 drive and idler units
Loadability up to 12.5 tons, 25 tons for a pair.
A150 drive and idler units
Loadability up to 75 tons, 150 tons for a pair.
Applications
Typical work-pieces
The self-aligning rollerbeds suit cylindrical work-pieces that are hard to rotate evenly.
PEMA A12 4D drive unit with blue rocker roller housings, black wheels and blue drive covers
Unbalanced work-pieces
Rotating parts whose weight is not evenly spread.
Thin-walled shells
Even weight distribution for thin-walled cylinders.
Heavy cylinders
Handling heavy cylindrical work-pieces up to 800 tons.
Changing diameters
Work-pieces of different diameters without separate adjustment.
Features
Rollerbed features
- Automatic adjustment for different work-piece diameters
- Even weight distribution
- Constant rotation speeds
- 2D drive units with two power-driven axles
- 4D drive units with four power-driven axles
- Idler units and rail car units
Benefits
What it brings to production
No separate adjustment when the work-piece diameter changes
Steady rotation for unbalanced, thin-walled and heavy work-pieces
Fulfils the European EN safety norm and carries CE marking
Rotating thin-walled or unbalanced shells?
Share your work-pieces, weights and welding process, and our Machinery team will help you select the right PEMA A series rollerbed.
Other Products in Welding Positioners & Manipulators
Explore other products available within the same product category and open each page for complete technical details.
PEMA MD Column and Boom
Medium-duty column and boom in three sizes for SAW, MIG/MAG and TIG welding in hard automation cells.
PEMA HD Column and Boom
Heavy-duty column and boom in six sizes with motorized movements, for tandem SAW and seam welding.
PEMA EHD Column and Boom
Extra heavy-duty column and boom in six sizes for multi wire SAW, strip cladding and narrow gap welding.
PEMA Skymaster PRO Positioners
Programmable positioners from 750 to 35 000 kg that store over 1,700 work positions and work over WiFi.
PEMA Skyhook PRO Positioners
Single-support positioners in five sizes for heavy, complex work-pieces, with over 1,750 stored positions.
PEMA HPS Headstock and TPS Tailstock Positioners
Headstock and tailstock positioners from 3 500 to 40 000 kg for wind towers, trailer frames, pipes and beams.
PEMA Megamaster Positioners
Extra-heavy FPS positioners in six sizes for pressure vessels, cubic frames and other large welded parts.
PEMA N Series Conventional Rollerbeds
Compact conventional rollerbeds from 12 to 1 600 tons for rotating and handling cylindrical work-pieces.