RFQ Checklist
- Specify coupling type (gear, disc, jaw, fluid, grid)
- Provide motor shaft and gearbox shaft diameters
- State continuous application torque and maximum startup shock
- Define operational RPM and balancing requirements
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Precision & Industrial Couplings
High-performance torsionally rigid steel couplings, flexible rubber couplings, and fluid couplings designed to protect your gearbox from misalignment and severe shock loads.
Target Buyer:Mechanical engineers and system integrators who need to source the entire power transmission package (gearbox + couplings) from a single reliable vendor.
Capability Highlights
- Complete drive train protection preventing gearbox bearing failure
- Torsionally rigid gear and disc couplings for absolute synchronization
- Fluid couplings for soft-starts on heavy inertia loads like conveyors
- High-elasticity rubber couplings to dampen extreme vibrations
Typical Applications
- Motor-to-gearbox input connections
- Gearbox-to-load output shafts
- Heavy conveyor soft-starts
- High-precision servo motor automation drives
Engineering Focus
- Nominal and maximum torque transmission capability
- Radial, axial, and angular misalignment compensation limits
- Torsional stiffness (for servo drives) vs. damping capability (for heavy industry)
- Bore and keyway machining tolerances (H7/k6, shrink disc fits)
Key Evaluation Matrix
| Metric | Typical Range | Why It Matters |
|---|---|---|
| Misalignment Tolerance | Varies by coupling type (e.g., up to 3 degrees angular) | Absorbs assembly inaccuracies and thermal expansion, saving the gearbox bearings from destructive side loads. |
| Shock Absorption | Fluid/Elastomeric types offer high damping | Protects the gear teeth from sudden jams or heavy startup inertia. |
Public Selection Matrix
Subseries and Specification Coverage
Use this matrix to identify the right engineering review path before requesting model-specific CAD, drawings, or a drop-in replacement check.
| Subseries | Scope | Public Specs to Check | Buyer Use |
|---|---|---|---|
| All-steel torsionally rigid coupling | High-torque rigid coupling packages for synchronized shafts, heavy gearboxes, and servo-driven machinery. |
| Use this family when angular accuracy and torque transfer matter more than vibration isolation. |
| Flexible elastomer coupling | Flexible shaft couplings for moderate misalignment, shock absorption, and motor-gearbox protection. |
| Use this family when the drivetrain needs forgiving alignment and easy service. |
| Fluid coupling | Hydrodynamic soft-start couplings for conveyors, crushers, pumps, and heavy motor starts. |
| Use this family when start-up shock and overload protection are the primary buying reasons. |
Risk Controls
- Vibration at high speeds: Couplings are dynamically balanced to ISO 1940-1 standards to ensure smooth running at high RPM.
- Bore mismatch upon delivery: We provide exact CNC bore and keyway machining prior to shipment, ensuring immediate plug-and-play installation.
RGB-COUP
CAD and Datasheet Availability
Engineering confirms bore, keyway, torque, speed, and misalignment expectations before sending matched coupling files.
Public spec status
Product-family brief and RFQ worksheet are public.
CAD release status
Released after shaft and misalignment review.
Accepted formats
STEP, IGES, SolidWorks, 2D PDF or DXF on request
Minimum inputs before CAD
- Bore sizes and keyway details
- Torque and speed
- Misalignment allowance
- Servo or industrial drive context
Matched package after review
- Coupling envelope
- Bore and keyway drawing
- Selection notes
- Inspection checklist
Engineering Downloads for This Product
Use the no-login worksheets before sending drawings or requesting model-specific CAD. They help engineering confirm torque, backlash, interface, inspection, and replacement assumptions for Precision & Industrial Couplings.
- Download the public engineering brief for the Precision & Industrial Couplings family before requesting matched datasheets, drawings, or CAD files.
- Download the engineering asset index to check public worksheet availability, CAD release status, and minimum inputs for this product family.
- Download the gearbox RFQ template to structure torque, ratio, backlash, duty cycle, quantity, and delivery inputs.
- Download the replacement review checklist when comparing an incumbent gearbox, catalog model, or damaged installed reducer.
- Download the inspection document request to align dimensional, material, heat-treatment, run-in, and OQA records before PO.
- Download the CAD package manifest to review release gates for datasheets, 2D interface drawings, 3D CAD envelopes, and inspection file sets.
- Open the CAD and datasheet library to check package layers and revision controls before requesting model-specific files.
- Open the full engineering resource center for CAD release policy, export packing inputs, and buyer workflow guidance.
- Send a structured RFQ with this product context so engineering receives the product family, source page, and public brief reference before reviewing attachments.
Product Gallery
Buyer FAQ
Do you sell couplings separately or only with gearboxes?
We sell them both as standalone components and as part of a complete, pre-assembled drive package with our gearboxes.
Which coupling should I use for a heavy belt conveyor?
A fluid coupling is typically recommended on the input side for soft starting, protecting both the motor and gearbox from extreme startup inertia.
Related Resources
Engineering review: send your application requirements
Inquiry Email
Please attach 2D/3D CAD drawings, target torque/speed, and quantity.