MNM Scales 5,000 lb Stainless Shear Beam Replacement Guide: SQB SS, RL35023S, 65023SS & Revere 9123
- pete8781
- Jul 29
- 2 min read
For interchange verification before ordering, call MNM Scales at (832) 290-3120 or email mnmscales@yahoo.com with the old load-cell model and scale information.
The MNM Scales 5,000 lb stainless shear beam replacement kit targets several widely used single-ended beam families, including Celtron SQB SS, Rice Lake RL35023S and RL39123, Sensortronics 65023SS, Revere 9123, HBM B35, Artech SS30310 and Coti Global CG-23SS. These cross-references can make it easier to source a four-cell replacement set for a floor scale, hopper or platform, but the old model number is only the first compatibility check.
Published Cross-Reference Models
MNM explicitly lists Artech SS30310, Celtron SQB SS, HBM B35, Revere 9123, Rice Lake RL35023S, Rice Lake RL39123, Sensortronics 65023SS and Coti Global CG-23SS as interchange families. Searchers often begin with one of those model numbers because the original cell is damaged or obsolete, so the practical job is to determine whether the candidate replacement matches the exact capacity and mechanics of the existing scale.
Compatibility Checklist Before You Buy
Check capacity first: replacing a 5,000 lb cell with the wrong capacity changes system output and overload behavior. Then compare overall dimensions, mounting-hole spacing, loading-end geometry and height through the foot/spacer. Compare rated output; the MNM cell is listed at 3.00 ± 0.015 mV/V. Compare bridge resistance; MNM publishes 385 ± 5 ohms input and 350 ± 3 ohms output. Confirm cable length, environmental construction and wiring. Finally, if the scale is Legal for Trade, confirm the replacement is acceptable for that certified configuration and service jurisdiction.
Why Replace All Four Cells Instead of One?
A single-cell replacement can be appropriate when the remaining cells are healthy and the new sensor is closely matched. A four-cell set can be attractive when multiple cells are corroded, the system has mixed unknown replacements, the platform has persistent corner-balance problems or the owner wants a consistent new sensor set. Whichever approach is chosen, a replacement changes the weighing system enough that corner adjustment and span verification should follow.
Wiring Differences: Do Not Match by Color Alone
MNM publishes red +excitation, black -excitation, green +signal and white -signal. Another manufacturer may use different colors. When replacing an existing cell, identify the electrical function of each old conductor from its documentation or junction-box terminals instead of assuming color equivalence. If the new cell produces a negative reading under load, signal polarity may be reversed, but confirm the whole wiring path before changing leads.
After Replacement: Corner Trim and Recalibration
Level the scale, make sure all feet carry load and place the same reference weight over each corner. Trim the summing box until the corners agree, then perform indicator zero and span calibration. Recheck the corners after span and verify at another load if possible. A cell that is electrically compatible but mechanically preloaded can still produce poor corner accuracy, so investigate the installation if trimming requires an extreme adjustment.
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