Product Overview
A Low-Range Norbar Torque Head, Engraved in Banbury and Pulled From a Calibration Lab
Condition
Used and in good cosmetic shape, with the normal handling wear of a working lab tool. The aluminum-finish barrel carries scattered fine scratches and swirl marks, a few short scribed lines near the connector flange, and a dark smudge low on the body. The engraved panel stays crisp and fully readable in the photos: TORQUE TRANSDUCER, CAPACITY 50 LBF IN, SERIAL No 34381 ETS, NORBAR TORQUE TOOLS LTD. BANBURY, OXON. Both drive ends look clean under the camera, with light rotational machining marks on the faces and square corners that read sharp rather than rounded, and the six connector pins stand straight with no bent or missing contacts visible. The two slotted screws on the connector flange show small tool marks. Our record has it coming out of a recommissioned calibration lab. It is sold untested and uncalibrated, and with a single unit in stock these photos are the spec for the exact piece you receive.
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Product Overview
This is a Norbar static torque transducer, identified by a panel milled into the barrel and engraved TORQUE TRANSDUCER, CAPACITY 50 LBF IN, SERIAL No 34381 ETS, NORBAR TORQUE TOOLS LTD. BANBURY, OXON. It is the in-line style: a 1/4 in female square socket on one end and a 1/4 in male square drive with a spring ball detent on the other, so torque runs straight through the body from the driver to the fastener or fixture and the sensing element sits in the middle of that path. A six-pin circular connector rides on a two-screw flange partway up the barrel, its olive shell carrying molded markings that are only partly legible in the photographs. Against the ruler the plain cylindrical body measures approximately 3-1/4 inches long, not counting the male drive tang. Capacity is the 50 lbf in the plate states, which is the low end of the torque world, the range where small screws, instrument fasteners and 1/4 in drive screwdrivers get checked. The usable lower limit, accuracy class, output type, overload margin, temperature coefficients and connector pinout are not confirmed here, so verify against the Norbar datasheet for this serial before use. Note also that 34381 ETS is a serial number rather than a model number, and it is the strongest identifier legible on this body.
Key Features
- Engraved capacity: 50 LBF IN (50 lbf in) static torque
- Maker engraved on the body: NORBAR TORQUE TOOLS LTD. BANBURY, OXON
- Engraved SERIAL No 34381 ETS, the only unit code legible on the part
- 1/4 in square drive in and out: female socket one end, male tang with ball detent the other
- Six-pin circular connector on a two-screw flange, keyed shell, markings partly legible
- Plain cylindrical aluminum-finish housing, approximately 3-1/4 inches long against the ruler, excluding the drive tang
- Accuracy, output type, pinout and temperature limits: not confirmed - verify against the datasheet before use
- Sold untested and uncalibrated, one unit in stock, photographed from every side
Applications
- A calibration tech rebuilding a small-torque bench station who needs a low-range head that sits between the driver and the fixture instead of a coarse 250 lbf in unit
- A tool room that checks 1/4 in drive torque screwdrivers and small wrenches, where a 50 lbf in head is the right end of the scale to read them honestly
- A production engineer instrumenting a screw-down test rig and wanting a real in-line transducer in the torque path rather than a reaction mount
- A metrology lab that already runs a Norbar readout and wants a spare low-range head to send out for calibration and hold in reserve
Frequently Asked Questions
What exactly is engraved on this transducer?
Four lines on a milled panel: TORQUE TRANSDUCER, then CAPACITY 50 LBF IN, then SERIAL No 34381 ETS, then NORBAR TORQUE TOOLS LTD. BANBURY, OXON. No model or catalog number is legible anywhere else on the body; the connector shell carries small molded markings that the photographs do not resolve. If you need to pin down the exact variant, the serial is what Norbar will want from you.
Has it been tested or calibrated?
No. We inspected it visually and photographed it, and that is the extent of it. No excitation was applied, no output was read, and no calibration certificate came with it. Treat it as a mechanical assembly of known identity that needs a calibration before it produces numbers anyone should trust.
Will it work with my Norbar display?
Norbar instruments are the natural host for a Norbar transducer, but we cannot confirm the pinout, the output type or which readouts this particular serial was built to talk to. Check the connector and output against the datasheet for serial 34381 ETS before you commit to a mating cable or a display.
What is included?
The transducer shown in the photos, with its integral 1/4 in square drives and its six-pin connector. No mating cable, no display, no adapters, no calibration certificate.
What am I taking on if I buy this one?
You are buying a used instrument as-is: pulled from a recommissioned calibration lab, cosmetically honest, electrically untested and uncalibrated. What we can stand behind is identity and physical state, and both are documented here in seven photographs, including the engraved plate, both drive ends and the connector face. Price it in your head as a transducer plus a calibration, decide from the pictures rather than a promise, and buy it only if that math works for your bench. This one clears our free shipping line on its own, and it leaves the Idaho warehouse the same or next business day.
Norbar has been engraving Banbury on torque tools since long before digital readouts, and 50 lbf in is the quiet end of the scale, where a small screw either got the right pull or it did not. Send it out for calibration, wire it up, and let it go back to settling arguments on somebody's bench.
