Golden Bearing Company
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Manufacturer KTR
ROTEX GS
ROTEX GS
GS 12
Availability
Confirm at quotation
KTR · ROTEX GS · Jaw coupling · GS 12
Nominal torque TKN
9 Nm
Max bore
12 mm
Max speed
28000 rpm
Outside dia.
25 mm
- Manufacturer
- KTR
- Product Family
- ROTEX GS Couplings
- Series
- ROTEX GS
- Designation
- GS 12
- Configuration
- ROTEX GS
KTR ROTEX GS size 12 catalogue data for engineering selection.
- Product Type
- Jaw coupling
- Industry
- Industrial drives, precision automation
Why Source Through Golden Bearing Company
Authorised industrial distributor
Engineering Support
Duty review, bore selection, and application engineering assistance
Authorised Manufacturer Data
Specifications published exactly as manufacturer catalogue data
Technical Assistance
Configuration, interchangeability, and spare element guidance
Product Overview
KTR GS 12 is a ROTEX GS backlash-free jaw coupling size 12 with Aluminium hubs. Nominal torque TKN is 9 Nm at 98 ShA-GS spider selection. Catalogue envelope is 25 mm outside diameter by 34 mm overall length with maximum bore 12 mm.
Commercial Identification
Authoritative procurement identifiers for ERP, RFQ, and purchase order entry. Copy values directly where shown.
- Manufacturer
- KTR
- Product Family
- ROTEX GS Couplings
- Series
- ROTEX GS
- Designation
- GS 12
- Configuration
- ROTEX GS
Selection Guidance
Engineering checkpoints when specifying KTR GS 12.
Engineering Specifications
KTR catalogue values for GS 12. Parameters not tabulated for this size are omitted rather than estimated.
Key catalogue specifications
| Designation | GS 12 |
|---|---|
| Nominal torque TKN (98 ShA) | 9 Nm |
| Maximum finished bore | 12 mm |
| Maximum speed (Hub 1.0) | 28000 rpm |
| Hub material | Aluminium |
| Outside diameter D_H | 25 mm |
| Overall length L | 34 mm |
| Setscrew size | M4 |
| Setscrew tightening torque T_A | 1.5 Nm |
Misalignment limits
| Axial shift | +0.9 / -0.4 |
|---|---|
| Radial offset | 0.08 mm |
| Angular offset | 0.9 deg |
Dimensions
Mounting envelope dimensions from KTR catalogue tables for layout and drive integration.
Max bore
12 mm
Outside dia. (D_H)
25 mm
Overall length (L)
34 mm
| Maximum finished bore | 12 mm |
|---|---|
| Outside diameter (D_H) | 25 mm |
| Overall length (L) | 34 mm |
| Setscrew size | M4 |
| Setscrew tightening torque T_A | 1.5 Nm |
KTR Catalogue Reference
Authoritative source for the engineering values published on this page.
Published data basis
Engineering values on this page follow KTR catalogue tables for KTR GS 12. Additional catalogue caveats apply: Alternate hub Type speeds tabulated at 20000 rpm in extract A. Parameters not shown require KTR manufacturer catalogue verification before design sign-off.
Applications
Typical KTR ROTEX GS applications for GS 12.
Industrial jaw coupling
Backlash-free drive
Elastomer spider selection
General machinery
Pump and fan drives
Configuration and Spider Compatibility
Elastomer spider selection for KTR GS 12.
ROTEX GS coupling role
Backlash-free jaw coupling with elastomer spider under compression. Spider hardness governs damping, temperature limits and torsional stiffness.
Compatible elastomer spiders
| Spider | Hardness | Material | Temperature range | Application characteristics |
|---|---|---|---|---|
| 80 ShA-GS | 80 Shore A | Polyurethane | -50 C to +80 C | Exceptional vibration damping; ideal for electrical measuring systems. |
| 92 ShA-GS | 92 Shore A | Polyurethane | -40 C to +90 C | Standard automation, control systems, and main spindle drives. |
| 98 ShA-GS | 98 Shore A | Polyurethane | -30 C to +90 C | Standard high-dynamic positioning drives and machine spindles. |
| 64 ShD-H-GS | 64 Shore D | Hytrel | -50 C to +120 C | Designed for planetary gears and backlash-free gear drives. |
Frequently Asked Questions
Engineering and procurement answers for specification review and quotation.
What is KTR GS 12?
KTR GS 12 is a ROTEX GS backlash-free jaw coupling size 12 with Aluminium hubs. Nominal torque TKN is 9 Nm at 98 ShA-GS spider selection per KTR catalogue tables.
What is the maximum bore for KTR GS 12?
Catalogue maximum finished bore for KTR GS 12 is 12 mm. Confirm hub type and spider selection against shaft diameter and duty.
What is the maximum speed of KTR GS 12?
Maximum speed for KTR GS 12 is 28000 rpm at Hub Type 1.0 per KTR catalogue tables used on this page.
Which spiders are compatible with KTR GS 12?
Compatible ROTEX GS spider designations for size 12 are listed in the Compatible elastomer spiders section. Spider hardness governs damping, temperature limits and torsional stiffness.
How do I request a quote for KTR GS 12?
Send shaft bore, torque duty, speed, configuration (hub type / EK or DK layout where applicable) and application context. Golden Bearing Company supports engineering-led KTR ROTEX GS identification without publishing price or stock on this page.
Request an Engineering Quote
Share KTR GS 12 designation, shaft bore, torque duty, speed and configuration context for engineering quotation.