3320 Specification Loadcell Model: 29/SPB3320VB

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Specifications

Assembly Numbers
29/SPB3320VB Loadcell only (shown)
29/SPB3320VU Loadcell, unitised with bearing plates
Structural Configuration
Double ended, rigid-mount shear beam Compression loading
Bare Weight
27.2kg
Unitised Weight
41.3kg
Static Capacity
4,800kg
Dynamic Capacity
32,000kg
Safe Overload
150% of Static Capacity
Ultimate Overload
Minimum of 300% of Static Capacity
Loadcell Body Material
4340 alloy steel, heat treated to 180,000psi yield strength
Bearing Plate
21/63-00606 single piece weld-down ASTM Steel
Top Mounting Bolts (3)
1"-14TPI x (Length dependent on mountings) Grade 8
Recommended Torque: 945Nm(700ft/lb)
Tie Down Bolts (2)
90/982516 1"-14TPI x2-½" Grade 8
Recommended Torque: 945Nm(700ft/lb)
Connector
4 pin Military style, injection moulded
Cable
Custom 4 core with polyurethane jacket

Electrical

Excitation
15 volts (AC or DC)
5-10 volts Recommended
Output
0.5.mv/v @ 25,400 kg
Impedance
350Ω +/- 1.0Ω
Isolation
500MΩ at 50 volts

Dimensions and Mounting Instructions

IMPORTANT This Loadcell must be mounted in accordance with Elphinstone Instructions. Failure to do so may void warranty. Specifications to change without notice. These specifications supercede all previous specifications as of October 2006.

Key

  1. 610 mm
  2. 107 mm
  3. 335 mm
  4. 99 mm
  5. 47 mm
  6. 18 mm
  7. 80 mm
  8. 1-½" x 10mm Deep
  9. 1"-14TPI x 35mm Deep
  10. 228 mm
  11. 1"-14TPI x 3¼" Grade 8

Connections

  1. Excitation +
  2. Signal +
  3. Signal -
  4. Excitation -

Mounting Requirements

  • Top Plate must be dead stiff and machined flat after welding
  • Bottom Mounting must be dead stiff
  • Bearing plate must be welded using 10mm fillet
  • Across end and fully down each side

Precautions

  • Do not strike an Arc on the loadcell body with a welder
  • It is Ok to use the loadcell to position the Bearing plate for tack welding only
  • Remove the loadcell to complete welding procedure
  • Do not damage the bottom cover plate as this protects delicate strain gauges
  • Take care to protect the loadcell connector/cable as this can not be replaced in the field
  • Fit protection for the loadcell connector from stones and foreign objects which may damage it
  • Do not damage or paint over the Part/Serial Number identification tag

Capacity

Maximum Dynamic Load
32,000kg (70,500 lb)
Maximum Static Load
48,000kg (105,800 lb)
Top Bolt Thread Engagement into Loadcell
Minimum = 25 mm
Maximum = 32 mm

Bolt Tensions

1" Top mounting bolts
945Nm(700ft/lb)
1" End mounting bolts
945Nm(700ft/lb)
Coat all bolt threads with anti-seize
 

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