ZCD Conical Bore Elastic Pin Gear Coupling is the conical shaft-hole version of the elastic pin gear coupling family in the industrial pin-coupling range. The published family covers ZCD1-ZCD13, with nominal torque from 112 to 100,000 N·m and allowable speed from 5,000 to 1,500 r/min across the size range. These are series limits, not a substitute for selecting the exact model row. Final selection should match both shaft interfaces, operating duty and available installation space.
| Selection item | Published information / action |
|---|---|
| Series | ZCD1-ZCD13 |
| Nominal torque range | 112 to 100,000 N·m |
| Allowable speed | 5,000 to 1,500 r/min across the size range |
| Operating temperature / note | -20°C to +70°C family operating range |
| Shaft interface | The taper geometry cannot be selected from shaft diameter alone. Supply the shaft drawing or complete taper dimensions for confirmation. |
| Quotation status | Pricing and availability are confirmed after duty and shaft data define the required configuration. |
Product structure and torque path
ZCD retains the elastic pin gear coupling torque path but uses a conical shaft-hole configuration. The conical interface is the defining selection difference and must match the mating shaft geometry.
The section drawing below shows the documented mechanical arrangement and should be read together with the model table. The number, size and surrounding dimensions of components vary across ZCD1-ZCD13.
Complete Technical Data
Dimensions and specification table
The table below includes the available shaft-hole diameter and length information together with the dimensional columns, moment of inertia and mass values shown for the series. Open the image for a full-size view when reviewing individual rows.
Quick torque and speed reference
The table below transcribes the nominal torque and allowable speed for each published model or frame size. It is a screening table: shaft-hole diameter, shaft-hole length and the remaining dimensions must still be checked on the detailed size row and the machine drawing before release.
| Model / size | Nominal torque (N·m) | Allowable speed (r/min) |
|---|---|---|
| ZCD1 | 112 | 5,000 |
| ZCD2 | 250 | 5,000 |
| ZCD3 | 630 | 4,500 |
| ZCD4 | 1,800 | 4,200 |
| ZCD5 | 4,500 | 4,000 |
| ZCD6 | 8,000 | 3,300 |
| ZCD7 | 11,200 | 2,900 |
| ZCD8 | 18,000 | 2,500 |
| ZCD9 | 25,000 | 2,300 |
| ZCD10 | 31,500 | 2,100 |
| ZCD11 | 40,000 | 2,000 |
| ZCD12 | 63,000 | 1,700 |
| ZCD13 | 100,000 | 1,500 |
Series rating overview
Technical data list ZCD1-ZCD13 as one family. Across that family, nominal torque spans 112 to 100,000 N·m, while allowable speed spans 5,000 to 1,500 r/min across the size range. A larger nominal rating does not automatically make a model suitable: the shaft-hole combination, shaft-hole length, outer dimensions and the actual machine speed must also fit the selected row.
| Parameter | Published family information |
|---|---|
| Model / size range | ZCD1-ZCD13 |
| Nominal torque | 112 to 100,000 N·m |
| Allowable speed | 5,000 to 1,500 r/min across the size range |
| Operating note | -20°C to +70°C family operating range |
| Bore and shaft-hole length | Model-specific; confirm against both shaft drawings |
| Final configuration | Confirmed from exact duty, shaft interface and dimensional envelope |
Shaft bore, interface and available space
The taper geometry cannot be selected from shaft diameter alone. Supply the shaft drawing or complete taper dimensions for confirmation.
For a replacement enquiry, send the existing coupling designation if known, but do not rely on the designation alone. Include both shaft diameters, usable shaft lengths, keyway or taper information, the distance between machine reference faces and a drawing or clear dimensional sketch. For a new machine, the coupling should be reviewed at the same time as the motor, gearbox or driven-shaft arrangement so that removal space and inspection access are not trapped by surrounding structure.
Application and duty review
This series can only be matched to an application after the operating duty is known. Application guidance is used to identify duty questions before a model is proposed. For ZCD Conical Bore Elastic Pin Gear Coupling, check normal running torque, operating speed, start/stop behavior, reversing or braking where relevant, shaft alignment, environmental conditions and the consequence of a planned stop for inspection.
When the duty falls near a published rating boundary, or when shocks and process interruptions are important, send the full machine duty instead of choosing from the headline range. The quotation should identify the exact size proposed and the shaft-hole arrangement used for that proposal.
Selection and customization workflow
1. Define the drive
Record driver power, normal speed, driven equipment, operating pattern and any braking or reversing requirement.
2. Confirm shafts
Provide both shaft diameters, shaft-hole lengths, key or taper details and the available coupling envelope.
3. Match the family
Compare the requested duty with the published model range and choose the configuration that fits the interface.
4. Review the drawing
Confirm the exact selected row and any requested manufacturing or inspection requirement before final order confirmation.
If you are comparing this product with another family, use the pin coupling selection guide rather than assuming that a larger coupling or a different elastic arrangement is automatically interchangeable.
Installation, inspection and maintenance
- Clean and inspect both shafts before the hubs are positioned.
- Confirm the selected bore geometry and axial location against the approved drawing.
- Align the connected machines within the machine maker and project requirements; flexibility is not a substitute for correcting poor alignment.
- Verify pins, sleeves or elastic elements, retainers, bolts and brake-wheel parts where applicable before fitting the guard.
- After commissioning, inspect for looseness, unusual wear, displaced components, abnormal vibration or surrounding machine conditions that may load the coupling unevenly.
Maintenance intervals should follow the actual duty, inspection findings and machine requirements. Service intervals and part life depend on the actual duty, environment, installation condition and inspection findings.
Information to include in your quotation request
| Question | Information to provide |
|---|---|
| What must the coupling transmit? | Operating torque or motor/drive data, speed and driven equipment. |
| What are the shaft interfaces? | d1, d2, usable shaft lengths, keyway or taper geometry and a drawing when available. |
| Is braking part of the assembly? | Brake-wheel requirement and geometry for HCL, TCL or ZCL configurations. |
| What is the environment? | Temperature, dust, moisture, corrosion exposure or other project-specific conditions. |
| What documentation is required? | Drawing approval, inspection items and any material or certificate requirement requested by the project. |
Frequently asked questions
Can I choose a size from torque alone?
No. Torque is one check. Speed, shaft bores, shaft-hole lengths, overall dimensions and operating conditions must fit the same model row.
Can the product replace an existing coupling with the same family name?
A family name is not enough to confirm interchangeability. Send the existing drawing or all critical interface dimensions for comparison.
Are material grades and certificates included automatically?
Material grades, certificates and inspection documents are order-specific. List any required item in the RFQ so it can be confirmed in the quotation.
How should I request a quotation?
Send the coupling family if known, torque or drive power, speed, both shaft interfaces, driven equipment, quantity and a drawing or existing-product photo when available.
Where can I compare related families?
Review the Elastic Pin Gear Couplings category, then use the engineering guide to compare the torque path and interface before requesting final selection.
Practical Guidance
Selection, installation and service checks
Use these checks when narrowing a series, confirming a replacement or preparing a quotation. They are intended to keep the chosen configuration tied to the actual machine duty and shaft interface.
Review operating duty
Operating conditions can change the preferred configuration even when the steady running point appears simple. Review shaft fit, hub seating, removal space, alignment and any duty that can amplify movement at the interface. These observations belong next to the numerical duty because they explain whether the coupling is being asked to absorb routine transient behaviour or compensate for a machine problem that should be corrected elsewhere. A flexible pin coupling can accommodate limited relative movement by design, but it should not be used as a substitute for a sound base, correct shaft condition or proper alignment of the connected machines.
Inspection focus
Inspection should concentrate on bore or taper geometry, contact/reference surfaces, keyway location, runout and axial seating against the approved drawing. Use the agreed drawing or configuration as the dimensional reference during inspection. If a project requires a specific material, treatment, inspection report or certificate, state it clearly in the enquiry so it can be confirmed for the order. Do not infer it from a similar model name or from a product photo.
After installation
Maintenance planning for ZCD Conical Bore Elastic Pin Gear Coupling should preserve repeatable removal and refitting without damaging the shaft interface or losing the original alignment reference. Establish a baseline after installation and compare later inspections with that condition. Changes such as loosened fasteners, displaced retainers, abnormal elastic-element wear, brake-surface issues where applicable, or new vibration should trigger a drive-train review rather than an automatic assumption that the coupling alone caused the symptom. Correcting the surrounding cause is as important as replacing a visibly worn part.
Before ordering
Before ordering, it is useful when the quotation and drawing use the same model designation, shaft configuration and open-item list. This helps compare quotations on the same duty and interface basis instead of using only a family name. Before ordering, confirm quantity, drawing approval needs, project-specific documentation, and any dimensions that still require confirmation. Commercial terms such as delivery schedule and packaging should be confirmed separately for the actual order.
Quick check summary
| Review item | Project-specific check |
|---|---|
| Selection basis | Confirm the shaft interface before using torque capacity as the final selection criterion. |
| Interface record | Shaft diameter, usable engagement length, keyway or taper dimensions, reference faces and the exact mating-shaft drawing. |
| Operating review | Shaft fit, hub seating, removal space, alignment and any duty that can amplify movement at the interface. |
| Inspection focus | Bore or taper geometry, contact/reference surfaces, keyway location, runout and axial seating against the approved drawing. |
| Maintenance access | Repeatable removal and refitting without damaging the shaft interface or losing the original alignment reference. |