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Robot hand

3-jaw parallel gripper - NTB series

New 3-jaw parallel gripper with through-hole

NTB seriesズーム

NTB series

  • Swarf protection and maintenance improved
  • High gripping force for stable gripping of heavy work piece
  • Lightweight and compact body not limiting load capacity of robot
  • New mounting style for smaller protrusion compared with conventional models
  • Improved gripping accuracy due to highly rigid body

How to order

NTB series
  • Please install a check valve in the air-pressure circuit so that the gripper will not release a workpiece even if the air pressure drops down.

  • When the jaw stroke is detected by the reed switches, mount reed switched on the grooves on the outer periphery of the product. Up to 4 reed switches can be mounted.

  • In case proximity switches are used for direct detection of jaw stroke, please purchase proximity switch brackets additionally.

Specifications

Model Jaw Stroke
Diameter
(mm)
Through-hole
Diameter
(mm)
Gripping Force (Note 2) Repeatability
(mm)
Mass
(kg)
Air
Consumption
per
reciprocating
(cm3)
Air pressure
(MPa)
Operating
Temperature
(℃)
Measurement
Distance (Note 1)
L(mm)
OD Gripping
(N)
ID Gripping
(N)
NTB309 12 14.3 10 1110 1270 ±0.015 0.70 38.0 0.2~0.8 5~60
NTB311 16 25 20 1510 1750 ±0.015 1.20 80.4 0.2~0.8 5~60
NTB313 20 29.9 20 3580 3750 ±0.015 2.10 190.1 0.2~0.8 5~60
NTB317 25 50 20 7440 9000 ±0.02 7.50 465.1 0.2~0.8 5~60
  • The measurement distance is the distance from the top surface of the master jaw to the gripping centre.
  • Value at supply air pressure 0.6 MPa.

    Allowable load for gripper

    For more information on the allowable load of each gripper, please see the following link.

    Option

    Gripping force

    Click the model number and the gripping force diagram will be displayed. The gripping force, F is a product of the actual gripping force per jaw, F1 and the number of jaws

    NTB309
    NTB311
    NTB313
    NTB317
    • NTB309
    • NTB311
    • NTB313
    • NTB317

    Drawing download

    Model Drawing download
    NTB309 PDF DXF 3D
    NTB311 PDF DXF 3D
    NTB313 PDF DXF 3D
    NTB317 PDF DXF 3D
    NTB309-B (Proximity Switch Bracket) - - 3D
    NTB311-B (Proximity Switch Bracket) - - 3D
    NTB313-B (Proximity Switch Bracket) - - 3D

    *Proximity switch cannot be used for NTB317.

    Machine Tool product lineup

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