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A black and silver industrial rotary table with a circular platform in the center and two large box-like supports on each side, used for precision positioning in machining or automation.

RAB Series

RAB Dual-Axis Trunnion Rotary Table

Type
Dual-axis double-arm trunnion
Models
5 (table Ø 200 - 800 mm)
Positioning Accuracy
±5 arc-sec (4 arc-sec repeat, 6 on RAB-400)
Allowable Load
50 - 1,200 kg

Start customizing your product with our configurator

The RAB is a dual-axis, double-arm trunnion table built around torque motors, water-cooled on RAB-400 to RAB-800 and convection-cooled on RAB-200: no worm gears, no roller cams, zero backlash. The symmetrical mechanical design carries five table sizes from Ø200 to Ø800 mm at ±5 arc-second positioning accuracy and 4 arc-second repeatability (6 arc-seconds on RAB-400), with absolute encoders closing the loop and pneumatic clamping holding position even through power loss. It upgrades machining centers to 3+2, 4+1 or full 5-axis simultaneous work in one clamping.

Tight on width? RAS is the single-arm sibling: the same torque-motor trunnion concept for space-limited 5-axis designs. View RAS Series →

  • ±5 arc-sec

    Positioning accuracy on every model

  • 3,900 N·m

    Max rotary torque (RAB-800, dual drive)

  • ±120°

    Tilting-axis travel

Applications

  • 5-axis simultaneous machining
  • Automotive parts machining
  • Die and mold machining
  • Aircraft parts machining
  • Optical and electronic parts
  • Medical equipment parts

Models

Tilting torque doubles on the dual-drive sizes (RAB-630: 2,400×2, RAB-800: 3,900×2 N·m), which drive the tilt axis from both arms. RAB-200 cools by convection; every larger size is water cooled.

Model Table Ø (mm) Max torque R / T (N·m) Max speed R / T (rpm) Allowable load (kg) Configure
RAB-200 200 81 / 280 400 / 150 50 Configure ↗
RAB-400 400 203 / 640 150 / 100 200 Configure ↗
RAB-500 500 1,100 / 2,400 100 / 60 600 Configure ↗
RAB-630 630 1,100 / 2,400×2 100 / 60 850 Configure ↗
RAB-800 800 3,900 / 3,900×2 90 / 60 1,200 Configure ↗

Part numbers & options

Drive configuration

  • Single One-arm drive — RAB-200 / 400 / 500
  • Dual Both-arm drive — RAB-630 / 800: doubled tilt torque

Clamping systems

Holds position through power loss.

  • Pneu Pneumatic (6 bar) — Every size, RAB-200 to RAB-800

Cooling

  • — Convection — RAB-200
  • WC Water cooled — RAB-400 and larger

Other Rotary Tables

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How buying works

Spec it in the configurator: drawings, 3D CAD, and a quote to follow.

HIWIN series are configured to your application, not bought off the shelf. Start from your loads and speeds if you are still choosing a size.

Rather talk it through? Request a quote from an application engineer.