inquiry@thruholeloadcell.comReply target: 4–12 business hours
DISPATCH TARGETSStandard 5 · Custom 10 working days ⌄

Targets start after drawing approval and order release. The quotation confirms the dispatch date and DHL/FedEx service; courier transit and customs are separate.

Delivery, warranty & OEM terms →
ThruHoleLoadCellMAGATOM / FORCE SENSING
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THRU-HOLE / DONUT / FORCE WASHER

Through-hole load cells.
Keep the center open.

Through-hole load cells for screw thrust, bolt preload and hollow-axis machines. Magatom integrates the bore, loading interface and paired signal conditioning into one application-specific measurement system.

Email spec & request CAD ↗Send ID × OD × height ↗
Metric & imperial boresPaired signal conditioningMOQ one for prototypes
Machined silver donut load cell with an open center bore, narrow inner loading rim and lower-left cable gland
Open center bore · concentric loading face
Internally threaded center-bore flange sensor with eight peripheral counterbores and a right cable
Internal thread · peripheral flange holes
Gray DIN-rail bridge transmitter with two recessed network sockets, USB port and green terminal strips
Bridge transmitter · data and terminal interfaces

Your shaft sets the ID.
Your machine sets the envelope.

A thru hole load cell must fit the force path as well as the space. Choose a smooth donut, bolt washer, threaded interface or large-bore annular ring.

Review a custom bore ↗

THROUGH HOLE LOAD CELL SELECTOR

Start with the space you have.

11 matching catalogue options. Confirm the selected bore/capacity combination and loading faces on the drawing.
MT-THL-D-ID05-OD25ID 5.1 · OD 24.9 · H 7.1 mmCapacity options: 200 / 500 / 1000 / 2000 / 4500 NRequest drawing →
MT-THL-D-ID06-OD25ID 6.2 / 6.58 · OD 24.9 · H 7.1 mmCapacity options: 200 / 500 / 1000 / 2000 / 4500 NRequest drawing →
MT-THL-D-ID08-OD25ID 8.2 · OD 24.9 · H 7.1 mmCapacity options: 500 / 1000 / 2000 / 4500 NRequest drawing →
Send my dimensional brief ↗Compare all model options →

FIVE SERIES / ONE MEASUREMENT CHAIN

Start with how the load enters the sensor.

01 / MT-THL-D↗
Machined silver donut load cell with an open center bore, narrow inner loading rim and lower-left cable gland

Smooth donut

Ball and roller screw thrust, bearing reaction and fixture clamping

3–50 mm / 1/8–2.0 in
100 N–200 kN02 / MT-THL-B↗
Polished bolt force washer with an open center bore and orange radial cable

Bolt force washer

Bolt preload monitoring, flange clamp force and torque-to-tension studies

M4–M30 / 1/4–1.0 in
2–500 kN03 / MT-THL-T↗
Internally threaded center-bore flange sensor with eight peripheral counterbores and a right cable

Threaded tension / compression

Hollow-shaft tests, center-hole jacks and cable tension fixtures

M6–M36 / TF & TS interfaces
200 N–100 kN04 / MT-THL-LP↗
Low-profile annular load cell with a large smooth center bore and two rings of mounting holes

Large-bore annular ring

Robotic hollow joints, hollow-shaft motors and wafer press fixtures

40–120 mm / large-bore options
500 N–20 kN light force / to 500 kN heavy05 / MT-AMP-KIT↗
Gray DIN-rail bridge transmitter with two recessed network sockets, USB port and green terminal strips

Conditioning & acquisition

PLC press control, paired sensor acquisition and multi-bolt force monitoring

Matched to selected sensor
System calibration required
bolt force sensing concept showing center bore, outer diameter and axial load path
Loading interface · center bore ID × outer diameter OD × height H

MOUNTING IS PART OF THE MEASUREMENT

A flat washer is useful. A correct load path is essential.

Hardened parallel load washers can improve the contact interface when matched to the sensor. They must load the designated annulus, keep the shaft free and avoid bridging the sensing element.

For bolt preload, assess torsion, support stiffness and force shunting in the assembled stack.

Read the mounting guide →

FROM THE BRIDGE TO YOUR CONTROL SYSTEM

Total force, or the load at every bolt?

A summing box combines bridge outputs. Independent USB or PLC acquisition retains individual forces so you can inspect load distribution. Specify the decision you need to make before selecting electronics.

Explore conditioning kits →Compare parallel vs. independent channels ↗
Flat black acquisition module with paired green sensor terminal blocks along both long edges and network ports
Multiple sensor inputs · separate terminal groups

ENGINEERING NOTES / FOUR DECISIONS THAT MATTER

Check the interface before you order.

Machined silver donut load cell with an open center bore, narrow inner loading rim and lower-left cable glandNOTE 01

How Does a Thru-Hole (Donut) Load Cell Work?

Full-bridge strain measurement, load-path design and mounting flatness for donut load cells.

Read guide →Flat black acquisition module with paired green sensor terminal blocks along both long edges and network portsNOTE 02

Load Cells in Parallel: Summing Box or Independent USB Channels?

Compare calibrated total force with individual bolt loads, excitation current and synchronization.

Read guide →Upright silver donut load cell showing its smooth through bore and recessed annular front faceNOTE 03

Metric vs. Imperial: Selecting ID / OD Clearance for Shafts & Bolts

A practical bore-clearance worksheet for M4–M30 bolts, ball screws and imperial shafts.

Read guide →Upright force washer with a smooth open bore, recessed circular face and right hexagonal glandNOTE 04

Strain Gauge vs. Piezoelectric Force Washers for Bolt Preload

Plan ISO 16047 torque/clamp measurements, VDI 2230 joint review, static hold duration and conditioner requirements.

Read guide →

PROTOTYPE TO OEM / DIRECT QUOTATION

Price the complete measurement chain.

01 / SENSOR

$260–$480 / pc

Indicative mV/V bare-sensor range. MOQ one for prototype review.

02 / LOAD INTERFACE

+$25 / pair

HRC 48 ground parallel load washers, with loading-land geometry matched to the selected sensor.

03 / CONDITIONING

+$145 standard option

Factory paired USB or standard PLC module. Confirm the exact interface and calibration scope.

Illustrative configuration: $340 sensor + $25 washer pair + $145 standard conditioner = $510/set. Multi-channel, EtherCAT and special environmental options are quoted separately.

Volume quote bands: 1–4 prototypes; 5–19 pieces with a target 15% reduction; 20–49 pieces with a target 25% reduction; 50+ annual OEM agreement. Eligible ID/OD modifications target $0 NRE; new elastic-body designs require a separate review. Final pricing and dispatch appear in the formal quotation.

Review delivery & OEM terms →

Drawings, calibration and procurement in one document pack.

17-4PH Manufacturing & Full-Bridge Quality

Plan the material, machining, strain bridge, sealing and final acceptance records for a through-hole sensor.

Force Calibration & Measurement Traceability

Specify five-point loading records, paired-system calibration, uncertainty and the required traceability chain.

CAD Drawings, Wiring Codes & TEDS

Request model-specific STEP/PDF files, verify bridge wiring, remote sense, connector pinout and TEDS reader compatibility.

Shipping, Warranty & OEM Quotation Terms

Prepare a prototype or OEM order with dispatch targets, commercial terms, documentation and warranty scope.

QUOTE / CAD / CALIBRATION SCOPE

Your dimensions go straight to engineering.

Send the selected model, interface and application. Request a 2D tolerance drawing, 3D STEP model and a sensor-only or paired-system quotation.

inquiry@thruholeloadcell.com

Initial-response target: 4–12 business hours, normally within one business day. Drawing turnaround and dispatch are confirmed with the configuration.

Calibration & traceability →CAD & wiring library →Shipping & warranty →
Include in quotation
Review your complete inquiry
Full name: Not provided
Work email: Not provided
Company / laboratory: Not provided

Hello ThruHoleLoadCell.com engineering team,

Request: Quote & 3D STEP
Reference: Incomplete custom brief — dimensions to confirm
Catalogue/model: Custom configuration
Series: MT-THL-D
Bore / nominal thread diameter: TBC mm
Outer diameter: TBC mm
Height: TBC mm
Force: TBC N
Mounting: Smooth bore
Thread / engagement: Not specified
Bridge: 700 ohm
Signal: mV/V
Conditioner module: Not selected
Connector/cable: Integral shielded cable
TEDS Template 33: Not selected
Hardened washer pair: Not selected
Channels: 1
Channel architecture: Single channel
Original model / revision: Not specified

Please confirm the selected dimensional combination, loading faces, pinout, calibration scope, lead time and quotation.
Application: Not specified
Quantity: Not specified
Project details: Not specified

Your brief is used to evaluate and respond to this request. Privacy policy. Request a secure transfer method for confidential CAD.

Email this complete inquiry ↗