Interface 3A Series Multi Axis Load Cells Instruction Manual
INSTALLATION INFORMATION
- Interface model 3A Series multi-axis load cells must be mounted on a surface that is flat and rigid enough so as to not deform appreciably under load.
- Fasteners should be Grade 8.8 for 3A60 thru 3A160 and Grade 10.9 for 3A300 and 3A400
- Sensors should be mounted using the recommended screws and mounting torques in the table below.
- Dowel pins should be used at all mounting surfaces.
- For 3A300 and 3A400 at least two dowel pins should be used on the live end. Up to 5 can be used.
- For sensors 500N and above, a thin coating of Loctite 638 or similar is recommended on the three mounting surfaces to prevent slippage.
- Mounting fixtures and plates may only contact the sensor at the indicated mounting surfaces.
MOUNTING DETAILS
| Model | Rated load/ Capacity | Dimensions | Material | Measuring platform / Live End | Stator / Dead End | |||||
| Thread | Tightening Torque (Nm) | Cylinder pin Hole (mm) | Thread / Cylindered Screw | Tightening Torque (Nm) | Cylinder pin Hole (mm) | |||||
![]() | 3A40 | ±2N ±10N ±20N ±50N | 40 mm x 40 mm x 20 mm | aluminum alloy | internal thread 4x M3x0.5 depth 8 mm | 1 | no | internal thread 4x M3x0.5 depth 8 mm | 1 | no |
![]() | 3A60A | ±10N ±20N ±50N ±100N | 60 mm x 60 mm x 25 mm | aluminum alloy | internal thread 4x M3x0.5 depth 12 mm | 1 | 2 x Ø2 E7 depth 12 mm | 2 x DIN EN ISO 4762 M4х0.7 6.8 | 2 | 2 x Ø3 E7 depth 5 mm |
| ±200N ±500N | stainless steel | internal thread 4x M3x0.5 depth 12 mm | 1 | 2 x Ø2 E7 depth 12 mm | 2 x DIN EN ISO 4762 M4х0.7 6.8 | 2 | 2 x Ø3 E7 depth 5 mm | |||
![]() | 3A120 | ±50N ±100N ±200N ±500N ±1000N | 120 mm x 120 mm x 30 mm | aluminum alloy | Internal thread 4x M6x1 Depth 12 mm | 10 | 2 x Ø5 E7 Depth 12 mm | 4 x DIN EN ISO 4762 M6х1 6.8 | 10 | 2 x Ø5 E7 depth 3 mm |
| ±1kN ±2kN ±5kN | stainless steel | internal thread 4x M6x1 Depth 12 mm | 15 | 2 x Ø5 E7 Depth 12 mm | 4 x DIN EN ISO 4762 M6х1 10.9 | 15 | 2 x Ø5 E7 depth 3 mm | |||
![]() | 3A160 | ±2kN | 160 mm x 160 mm x 66 mm | tool steel | internal thread 4x M10x1.5 depth 15 mm | 50 | 2 x Ø8 H7 depth 15 mm | 4 x DIN EN ISO 4762 M12х1.75 10.9 | 80 | 2 x Ø8 H7 depth 5 mm |
| ±10kN ±20kN ±50kN | tool steel | internal thread 4x M10x1.5 depth 15 mm | 60 | 2 x Ø8 H7 depth 15 mm | 4 x DIN EN ISO 4762 M12х1.75 10.9 | 100 | 2 x Ø8 H7 depth 5 mm | |||
![]() | 3A300 | ±50kN | 300 mm x 300 mm x 100 mm | tool steel | internal thread 4x M24x3 | 500 |
5x Ø25 H7 | 4 x DIN EN ISO 4762 M24х3 10.9 | 500 | 2 x Ø25 H7 depth 40 mm |
| ±100kN ±200kN | 800 | 800 | ||||||||
![]() | 3A400 | ±500kN | 400 mm x 400 mm x 100 mm | tool steel | internal thread 4x M30x3.5 | 1800 | 5x Ø30 E7 | 4 x DIN EN ISO 4762 M30х3.5 10.9 | 1800 | 2 x Ø30 E7 depth 40 mm |

Interface Inc.
- 7401 East Butherus Drive
- Scottsdale, Arizona 85260 USA
Support
Phone: 480.948.5555
Fax: 480.948.1924
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