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Thumbs - Technical Specifications

The two hydraulically operated MARTIN thumb systems; progressive (MPT) and linear (MLT) are available in a range of different sizes.

The advantages of using the MARTIN thumb attachments include: reduction of operating costs, usage time and a varied range of attachments.

Progressive thumb:

Dimensions in mm and inches
  A   B   max. OP     
  mm  inch   mm  inch    bar psi
MPT 10     660  26 1143 45 300 4350
MPT 12 720 28 3/8 1210 47 5/8  350 5070
MPT 16  777   30 5/8 1321 52 350 5070
MPT 18  891 35 1/8 1650 65 350 5070

Linear (non-link) thumb

Dimensions in mm and inches
  A   B   max. OP     
  mm  inch   mm  inch    bar psi
MLT 05       470 18 4/8  1040 41 300 4350

Additional Information

Modular tooth system for a wide range of tooth configurations.

Technical Specifications
Sizes:
• MLT 05: Excavator weight up to 5 tonnes
• MPT 10: Excavator weight 5 to 10 tonnes
• MPT 12: Excavator weight 9 to 12 tonnes
• MPT 16: Excavator weight 11 to 14 tonnes
• MPT 18: Excavator weight up to 17 tonnes
Max. operating pressure: 350 bar
Opening angle: approx. 180° Cylinder diameter: 50 mm to 90 mm

Subject to technical change without notice. All diagrams and photographs are used for illustration only. The manufacturer shall not be held responsible for any applications shown. Please refer to the operating manual! Josef Martin GmbH accepts no liability in the case of improper use or incorrect handling.