PRT2 – Precision Curved Guides, Rings and Segments

Curved guides, rings and segments provide accurate peripheral guidance in 360° or segmental motion, offering an effective alternative to slewing rings or turntables.

PRT2 Curved Rails and Ring Guides
Ring Gear Inside with Pinion
Ring Disk pinion
PRT2 timing belt
S Bend straight
PRT2 Curved Rail Segments
PRT2 Curved Rail Closed Loop
Load: 9.3kN and more
Speeds: 5m/s and faster
Low maintenance
Long system life
Works in dirty environments
Quiet and smooth running
Self-aligning system

Curved guides, rings and segments provide accurate peripheral guidance in 360° or segmental motion, offering an effective alternative to slewing rings or turntables.

Perfect for rotary applications – Including cylinder or pipe inspections, scanning, or any application requiring precise, accurate peripheral guidance around a circular object.

An alternative to slewing rings – With less preparation, less installation time, and reduced maintenance, PRT2 is an excellent alternative to slewing rings.

Ease of driving – PRT2 has an integrated rack and pinion drive or timing belt, negating the need for additional drive components.

Efficient – Carriages with Hepco’s V bearings run smoother and need less driving forces than slewing bearings.

Any size – Ring size diameters available from 93mm to 1.8m as standard, larger and non-standard diameters can be custom-made to suit the needs of the application.

Made for any environment – Stainless steel curved guides are available as standard and can be complemented by vacuum or extreme temperature bearings. Benefitting from V guide technology, PRT2 operates well in harsh environments.


  • Movement through an arc can be achieved using curved segments – saving on two systems X and Y
  • Curved guides operate in any orientation
  • Zero play and definable preload thanks to adjustable eccentric bearings
  • V edges and integrated racks can be either internal, external or both
  • Bearings are lubricated for life internally and are available with metal shields for low friction running or with nitrile seals to inhibit the ingress of particles
  • Additional equipment such as tooling, routing cabling or other services can be housed inside the system, saving valuable floor space
  • Special food lubricants and high temperature greases are available
  • For any size requirement, Hepco’s large diameter ring guides, segments and track systems can be manufactured to any diameter with no upper limit

Bearing sizes and their load capacity

This diagram provides an overview of the bearing sizes available and their load capacity depending on the application type.

Ring Gear Inside with Pinion

Contact us

Tel Sales Enquiries +44 (0)1884 257000 General Enquiries +44 (0)1884 243400

Address HepcoMotion Head Office
Lower Moor Business Park
Tiverton Way
Tiverton
Devon, EX16 6TG

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