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Heavy-duty Safety Coupling for steel mills, cranes, mining and port equipment
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Industrial Coupling

Safety Coupling

Designed for feeders, uncoilers, shear lines and overload-sensitive drives; defined overload release to protect shafts, gearboxes and driven machines.

  • Overload protection
  • Torque limiting or release
  • Prevents machine damage
Series
TORQUE / SHAFT / INSTALLATION / RESET
Model entries
4
HTML tables
1
Drawings / files
0
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No drawing? Send old coupling photos, nameplate details and shaft dimensions.

Documented engineering data

Product Overview and Application Boundary

A safety coupling consists of driving and driven sections, a torque-setting mechanism, a release or disengagement device and reset components. When overload exceeds the preset value, it cuts off or limits transmission to protect motors, reducers, bearings and driven machines. It is suitable for conveyors, feeders, uncoilers, shear lines, mixers and heavy-duty equipment where jamming may occur. Selection should not rely only on nominal torque; allowable protection torque, shock peak, reset method, release accuracy, speed, bore, keyway and installation space must be confirmed together.

Typical use

Recommended for feeders, uncoilers, shear lines and overload-sensitive drives.

Selection focus

Confirm torque, speed, shaft diameter, keyway, service factor, misalignment and working environment before selection.

Custom options

Bore, keyway, material, heat treatment, dynamic balancing, surface treatment and export packing can be customized.

Material and inspection

Common materials include 45 steel, 42CrMo or project-specified grades; inspection records can be supplied on request.

Manufacturing Control

Machining, Heat Treatment and Inspection Process for Safety Coupling

This route follows Safety Coupling from drawing and material review through blank preparation, CNC rough machining, feature machining, heat treatment, reinspection, finish machining, assembly and final release. The approved drawing determines the exact material and treatment route.

Manufacturing and inspection flowchart for Safety Coupling
Typical machining and heat-treatment route for Safety Coupling; drawing-specific operations are released only after technical approval.
  1. 01. Protection torque and interface review: Confirm torque, speed, shaft interfaces, alignment allowance, acceptance criteria and the approved drawing before release.
  2. 02. Material certificate and blank inspection: Verify material identity, certificate, heat number, blank dimensions and the specified forging, casting or bar-stock route.
  3. 03. Saw cutting and forging/casting blank preparation: Saw-cut the stock or prepare the forging/casting blank, remove scale, transfer traceability marks and retain machining allowance.
  4. 04. CNC rough turning of faces, diameters and bores: Use CNC or vertical lathes to rough-turn faces, outside diameters, bores and datum shoulders, leaving allowance for heat-treatment distortion and finishing.
  5. 05. Release pockets, cams, seats and sliding-surface machining: Machine the named teeth, grooves, holes, splines or mechanism features by turning, milling, hobbing, shaping, drilling, boring or grinding as specified.
  6. 06. Spring, ball, pin and release-element preparation: Manufacture or verify the spring, pin, bearing, friction or elastomer element to the released specification, with batch traceability where required.
  7. 07. Release/friction component heat and surface treatment: Heat-treat springs, pins, cams and load-carrying release or friction parts according to their material; apply the approved surface treatment while protecting threads and precision fits.
  8. 08. Hardness, distortion and NDT reinspection: Check hardness, effective case where applicable, distortion and surface condition; perform UT, MT or PT when required before final machining.
  9. 09. Bore, keyway and fit finishing: Finish-turn or grind datum faces and fits, then bore the shaft holes and machine keyways, splines, seal seats or mounting interfaces to the approved tolerances.
  10. 10. Release torque setting and verification: Assemble the release or friction stack, set the specified torque and verify release response and repeatability over the required test cycles.
  11. 11. Final inspection, marking and release: Complete final inspection, traceability marking, rust protection and packing only after the required records and acceptance results are complete.

Documented engineering data

Selection Information to Confirm

Final model selection is based on the actual drive data and approved drawing. Provide the items you already know; unknown values can be reviewed by engineering.

Upload Drawing & Get Quote
  1. 01Required torque or motor power and service factor
  2. 02Operating speed, peak load, starts and reversing duty
  3. 03Shaft diameters d1/d2, keyways and fit requirements
  4. 04DBSE, overall length and available installation space
  5. 05Temperature, dust, moisture, corrosion and maintenance access
  6. 06Existing drawing, old part photo, nameplate or measured dimensions

Documented engineering data

Model and Dimension Data

Use each catalogue drawing together with its HTML table. Final torque, speed, bore, material and fit remain subject to the approved project drawing.

Safety Coupling data sheet

On smaller screens, swipe horizontally or view the compact model cards.

ItemEngineering data to confirmRecommended range / notesRequired for quotation
Torque boundaryRated torque,peak torque and overload trigger conditionCheck by protection level and service factorMotor power,speed,reducer ratio,jam or shock condition
Shaft end dimensionsd1/d2,keyway,shaft extension length and fit toleranceVerify against old part or equipment drawingDrawing,old part photo,nameplate or measured dimensions
Installation envelopeOutside diameter,total length,guard and maintenance spaceAvoid interference with guard,bearing seat or brakeSite installation photo or assembly drawing
Reset /release modeShear,friction,ball detent,constant torque or manual resetConfirm by shutdown and protection logicWhether shutdown is allowed and auto reset is required

Documented engineering data

Related Applications

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Documented engineering data

Related and Alternative Products

Heavy-duty Drum Gear Coupling for steel mills, cranes, mining and port equipmentDrum Gear CouplingDesigned for steel rolling mills, cranes, mining drives and port handling equipment; high torque capacity with axial, angular and radial misalignment compensation.Heavy-duty Torque Limiter Coupling for steel mills, cranes, mining and port equipmentTorque Limiter CouplingDesigned for flying shears, cutting lines and drives that need a precise overload point; repeatable torque release and drive-train protection.Heavy-duty Grid Coupling for steel mills, cranes, mining and port equipmentGrid CouplingDesigned for belt conveyors, crushers, induced-draft fans and shock-loaded auxiliary drives; torsional damping, shock absorption and practical maintenance.Heavy-duty Gear Coupling for steel mills, cranes, mining and port equipmentGear CouplingDesigned for hoists, conveyors, winches and compact heavy-duty drives; compact high-torque transmission with reliable lubrication and sealing.

Documented engineering data

Selection Guides and Technical Articles

Safety Coupling for Heavy Duty Feeder | Selection GuideSafety Coupling selection for heavy-duty feeder: torque, speed, bore, keyway, load, alignment, maintenance, RFQ data.Safety Coupling for Uncoiler | Selection GuideSafety Coupling selection for uncoiler: torque, speed, bore, keyway, load, alignment, maintenance, RFQ data.What Is the Difference Between a Safety Coupling and a Torque Limiter? Select by Protective ActionThe terms Safety Coupling and Torque Limiter are often used interchangeably. Before discussing models and torque settin…

FAQ

Product Selection FAQ

Can the Safety Coupling be customized from a drawing or old part?

Yes. We can confirm bore, keyway, material, heat treatment, balancing grade, surface treatment and export packing by drawing or old part photos.

What information is needed before quotation?

Please send torque or motor power, speed, shaft diameter, keyway, equipment type, working condition, quantity, drawings or old coupling photos.

Can it replace an imported coupling brand?

Replacement is evaluated after checking dimensions, torque, material, installation space and working condition. Final drawings should be confirmed before production.

What applications are a good fit for the Safety Coupling?

Recommended for feeders, uncoilers, shear lines and overload-sensitive drives.

What should be checked during installation and maintenance?

Confirm the approved release or limiting torque, shaft interface, fastener tightening and guarding before operation. After a release event, identify the overload cause and follow the specified reset and inspection procedure.

Engineering data

Send an Engineering RFQ

Complete the contact step first, then add the operating data you already know. Unknown engineering values do not block submission.

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