We would introduce roundness and cylindricity measuring instruments to evaluate such roundness, straightness, cylindricity and coaxiality.

Kosaka Laboratory Ltd.

Roundness and Cylindricity Measuring Instrument  RONCORDER

Model Lineup

EC600

EC600 is a high accuracy, easy operation and compact type roundness measuring instrument, which suitable for production sites.

  • Easy operation by centering & tilting suport function.
  • Easy operation by big setmeter and auto magnification up.
  • Quick operation by auto stop function and quick operation button.
  • PC analyzing is available(option)
Mechanism / system Porous static pressure air bearing system / table rotation type
Rotation accuracy (0.04 + 0.0006H) μm
H: height from table surface (mm)
Max. measuring diameter φ220 mm both inner and outer diameters
Z traverse range 280 mm (at the use of b-type stylus arm)
Supplied with fine or coarse adjustment function (memory: 0.1 mm)
EC1550H

EC1550HA is proud of high rotation accuracy. Desk top type with user friendly cylindricity evaluation function is supplied.

  • Full posture pick-up
  • Guarantee Z axis straightness accuracy
  • EC1550A enables measurement of ring groove waviness.
Mechanism / system Porous static pressure air bearing system / table rotation type
Rotation accuracy (0.02 + 0.0004H) μm
H: height from table surface (mm)
Max. measuring diameter φ368 mm both inner and outer diameters
Loading capacity 25 kg
Z traverse range 250 mm (at the use of b-type stylus arm)
EC1650H

EC1650H furnish full of ingenuity for measuring with "high accuracy and quickly". EC1650 is economy.

  • High resolution
  • 2CR normal type, 2CR phase correct and Gauss filter supplied
Mechanism / system Porous static pressure air bearing system / table rotation type
Rotation accuracy (0.02 + 0.0004H) μm
H: height from table surface (mm)
Max. measuring diameter φ368 mm both inner and outer diameters
Loading capacity 25 kg
Z traverse range 300 mm (at the use of b-type stylus arm)
* In case of EC 1650
EC1850H

EC1850H supplies full automatic capability from centering/tilting to datasheet printing, with high-precision automatic table mounted.

  • Full automation of centering and tilting adjustment
  • Automatic measurement
Mechanism / system Porous static pressure air bearing system / table rotation type
Rotation accuracy (0.02 + 0.00035H) μm
H: height from table surface (mm)
Max. measuring diameter φ368 mm both inner and outer diameters
Loading capacity 25 kg
Z traverse range 300 mm (at the use of b-type stylus arm)
EC2150

High accuracy Roundness / Cylindricity measuring instrument with achieving easy operation.

  • Roatary table with auto-centering and auto-tilting functions.
  • Approach is easy to joystick operation.
  • Air pressure can be checked easily.
  • Can be moved to a position easier to see the position of monitor measurement.
Mechanism / system Porous static pressure air bearing system / table rotation type
Rotation accuracy (0.02+0.00032H) μm
H: height from table surface (mm)
Max. measuring diameter φ368 mm both inner and outer diameters
Loading capacity 30 kg
Z traverse range 300 mm (at the use of b-type stylus)
EC2500H/EC2700H

EC2500H/EC2700H is packaged fully automatic, excellent in repeatability, supreme accuracy, high functionality-best in its class, provided with safety function, and cost-effective. EC2700 is improved for higher vertical accuracy.

  • Full automatic tilting and centering
  • Safety function in pick-up
  • Automatic O.D. and I.D. changeover function (option)
  • EC2500HL / EC2700HL is long column type
Mechanism / system Porous static pressure air bearing system / table rotation type
Rotation accuracy (0.02 + 0.0003H) μm / EC2500H
(0.015 + 0.0003H) μm / EC2700H
H: height from table surface (mm)
Max. measuring diameter φ450 mm both inner and outer diameters
Loading capacity 60 kg
Z traverse range 400 mm (at the use of b-type stylus arm)
EC2500HF/EC2700HF

EC2500HF/EC2700HF has fully automatic pick-up interchange system, which is guided by measuring menu. Auto posture is inner, outer, upper and lower plane. EC2700F is improved for higher vertical accuracy.

  • Full automatic centering and tilting adjustment
  • Safety function in pick-up, all postures fully automated
  • Automatic changeover function of O.D. and I.D. measurement
  • EC2500HLF / EC2700HLF is long column type
Mechanism / system Porous static pressure air bearing system / table rotation type
Rotation accuracy (0.02 + 0.0003H) μm / EC2500HF
(0.015 + 0.0003H) μm / EC2700HF
H: height from table surface (mm)
Max. measuring diameter φ450 mm both inner and outer diameters
Loading capacity 60 kg
Z traverse range 400 mm (at the use of b-type stylus arm)
EC1850P/EC3300P

EC1850P/EC3300P is proper model for any types of piston form measurement with oval, taper and ring groove waviness of a piston.

  • EC3300P is for high precision specification
  • Mechanical or LSC auto centering/tilting with excellent accuracy and high speed
  • Analysis of piston form as a cylindrical/conical form
EC3300P
Mechanism / system Porous static pressure air bearing system / table rotation type
Rotation accuracy (0.02 + 0.0003H) μm
H: height from table surface (mm)
Max. measuring diameter φ450 mm both inner and outer diameters
Loading capacity 30kg
Z traverse range 400 mm (at the use of b-type stylus arm)
EC3600A/EC3600B/EC3600C

These models are compatible with heavy duty components. Especially for large size crankshafts.

  • EC3600A: for large-diameter and long components
  • EC3600B: for general large-diameter components
  • EC3600C: for large-diameter and planes
EC3600B
Mechanism / system Porous static pressure air bearing system / table rotation type
Rotation accuracy (0.06 + 0.0006H) μm
H: height from table surface (mm)
Max. measuring diameter φ450 mm both inner and outer diameters
Loading capacity 150 kg
Z traverse range 600 mm
EC4100H

EC4100H is proper model for heavy duty workpiece. Space saving type with auto centering, tilting, flattering table is mounted.

Mechanism / system Porous static pressure air bearing system / table rotation type
Rotation accuracy 0.05 μm
Max. measuring diameter φ550 mm both inner and outer diameters
Loading capacity 200 kg
Z traverse range 750 mm (at the use of b-type stylus arm)
EC5100H/EC6100

EC5100H/EC6100 is post new-generation jumbo type measuring instrument. Auto measuring of heavy duty components with high accuracy.

Mechanism / system Porous static pressure air bearing system / pick-up rotation type
Rotation accuracy 0.05 μm
Max. measuring diameter φ550 mm both inner and outer diameters
(* In case of EC5100H)
Loading capacity 200 kg
(* In case of EC5100H)
Z traverse range 1000 mm (at the use of b-type stylus arm)
(* In case of EC5100H)

Accessory list