Description
The SWP-G is the super short flex variant of the SWP universal joint coupling family — the most compact configuration in the SWP range, designed for installations where overall length is severely restricted. Double universal joint geometry with limited 5-degree flex per joint, optimised for near-coaxial drives with minor angular offset and substantial vibration absorption requirement. The super-compact design fits installation envelopes that no other SWP variant can accommodate.
SWP-G Specifications and Dimensional Range
The SWP-G range covers gyration diameters from 225 mm to 350 mm — a focused size range tailored to the compact drive applications where this variant is specified. Maximum flex angle is 5 degrees per joint, with torque ratings scaling from 56 kN·m at SWP225G to 224 kN·m at SWP350G. The double-joint geometry provides parallel offset capability proportional to the (small) intermediate body length.
| Model | Gyration Ø D (mm) | Nominal Torque Tn (kN·m) | Fatigue Tn Tf (kN·m) | Flex Angle β (°) | Bore D₂ (mm) | Lmin (mm) |
|---|---|---|---|---|---|---|
| SWP225G | 225 | 56 | 28 | ≤5° | 40–125 | 470 |
| SWP250G | 250 | 80 | 40 | ≤5° | 50–140 | 600 |
| SWP285G | 285 | 112 | 56 | ≤5° | 60–155 | 665 |
| SWP315G | 315 | 160 | 80 | ≤5° | 65–160 | 740 |
| SWP350G | 350 | 224 | 112 | ≤5° | 80–185 | 850 |
The 5-degree flex angle limit reflects the compact body length — the geometry cannot accommodate larger joint angles within the super-compact envelope. For applications requiring larger flex angles, alternative SWP variants with longer body lengths must be specified.
SWP-G Super Short Flex Type Universal Joint Coupling – super-compact double-joint design. Ever Power Flange Couplings Australia Ltd.
What Distinguishes the SWP-G from Other Universal Joint Types
The SWP-G addresses installations where overall length is the dominant design constraint — applications where the available envelope between motor and driven machine is too restricted for any other SWP variant. The double-joint geometry retains the constant-velocity power transmission benefit of the SWP family; the super-compact body length sacrifices flex angle capability to fit the restricted envelope.
Construction equipment with restricted machine envelope, agricultural machinery with compact subsystem layout, and certain industrial drives with severely restricted envelope all match this profile. The 5-degree flex angle is more than adequate for these applications — typical operating angles are 1 to 3 degrees, well within the SWP-G envelope.
Where Super-Compact Length Justifies Reduced Flex Angle
Selection between SWP-G and standard short-flex variants depends on the available installation envelope. If the envelope cannot accommodate the SWP-C short-without-flex equivalent — itself the shortest standard variant — the SWP-G super-short-flex provides the only solution. The trade-off is reduced flex angle capability; verify the operating angle stays comfortably within 5 degrees per joint before specifying.
Construction and Material Specification
Material specification follows the SWP family standard: 35CrMo alloy steel forging, full quench-and-temper heat treatment, induction-hardened journals to HRC 58-64. The compact body geometry concentrates more loading per unit volume than longer variants — heat treatment specifications and bearing selection are optimised for this denser loading profile.
Sealed needle roller bearings are pre-lubricated at assembly. The flanged hub interface follows the standard industrial flange convention. Flange bolts are high-tensile structural fasteners with locking compound applied during installation.
Shortest installed length in the SWP range. Fits installation envelopes that no other SWP variant can accommodate. Designed for severely restricted machine envelopes.
Two Hooke’s joints provide constant-velocity power transmission. Eliminates second-order velocity ripple inherent to single-joint operation.
Field-removable installation without welding. Standard industrial flange interface. Locking compound on bolt threads.
Compact double-joint design absorbs shock and vibration from compact drive arrangements where larger variants cannot fit.
Same material specification as the SWP family. Heat treatment optimised for the denser loading profile of compact geometry.
Reduced from the standard 10° per joint of longer SWP variants — the trade-off for super-compact body length.
Industrial Applications Across Heavy Industry
SWP-G applications cluster around installations where overall length is severely restricted and operating angles are within the 5-degree per-joint envelope.
Compact Construction Equipment Drives
Compact construction equipment subsystems where the available envelope between motor and driven machine is severely restricted specify SWP-G for the combination of double-joint constant-velocity and super-compact body length. The 5-degree flex angle is adequate for typical compact drive applications where operating angles are 1 to 3 degrees.
Agricultural Machinery and Industrial Compact Drives
Agricultural machinery with compact subsystem layouts — particularly auxiliary drives within larger machines where the primary driveline uses a different coupling type — specifies SWP-G for envelope-constrained applications. Industrial drives with limited angular offset but restricted overall length, including certain machine tool auxiliary drives, also use this industrial shaft coupling variant.
SWP-G super-compact assembly – designed for installations with the most restricted envelope.
Selecting the Correct SWP-G Size for Your Drive
Choose SWP-G when the available installation envelope is too restricted for any other SWP variant. Verify operating angles stay within 5 degrees per joint. The super-compact body length is the defining design constraint — torque rating and operating angle capability are secondary considerations within their published envelopes.
For installations requiring larger flex angles, alternative SWP variants must be specified despite the larger envelope footprint. Calculate operating angle headroom carefully before committing to the SWP-G specification.
Installation, Operation, and Maintenance Best Practice
Installation follows the SWP family flange-type workflow. The compact body simplifies handling and positioning in confined envelopes.
Confirm available envelope matches or exceeds the SWP-G installed dimension. The super-compact length is the defining specification — verify this dimension precisely before committing to the order.
Calculate maximum operating angle through each joint. Verify the angle sits within the 5-degree per-joint envelope with safety headroom. Any operating angle approaching 5 degrees requires consideration of alternative variants.
Verify existing shaft flange dimensions match SWP-G hub specifications. Clean flange faces. Apply locking compound to bolt threads as specified.
Lift compact coupling into position. Engage pilot register of each hub with corresponding shaft flange. The compact assembly simplifies positioning in confined envelopes.
Install all flange bolts in cross pattern. Torque to 30, 60, 100 percent of final value with calibrated wrench.
Run at progressively increasing speed. Monitor vibration carefully — the compact body has less inherent damping than longer variants. Inspect at first scheduled maintenance interval.
OEM Cross-Reference and Order Specification
Cross-reference is available for Voith Turbo super-compact cardan shafts and Rexnord short-body universal joint couplings. Provide OEM model code, gyration diameter, nominal torque, installed envelope dimensions, and flange interface dimensions for direct equivalent confirmation.
For compact construction and agricultural equipment applications, custom flange interfaces and non-standard bore configurations are available from our Sydney machining service within standard production lead times.
Why Choose Ever Power Australia
Ever Power Flange Couplings Australia Ltd. supplies SWP-G super-compact universal joint couplings for envelope-restricted Australian construction and agricultural equipment applications from our Sydney warehouse. Cross-reference work for compact OEM cardan shaft equivalents is included as a standard service. Custom flange machining for non-standard installations is handled by our in-house machine shop.
Ever Power manufacturing facility — ISO 9001 certified, 12,000 m², 108 dedicated coupling machines, 20+ years of production experience.
Every order placed with our Sydney team is backed by full material traceability, dimensional inspection certificates on request, and direct access to the engineers who specified, machined, and packed your coupling. We do not subcontract technical support — when you phone +61 2 9708 3322 during NSW business hours, you reach the people who actually know the product.
Frequently Asked Questions
Quick answers from our Sydney technical team. Contact us for application-specific guidance.
1. When should I specify SWP-G? +
2. Why is the flex angle limited to 5 degrees per joint? +
3. Is the SWP-G torque rating different from other SWP variants? +
4. Can I retrofit an SWP-G in place of a worn OEM compact cardan shaft? +
5. How quickly can I receive an SWP-G from your Sydney warehouse? +
Request a Quote — Sydney NSW Stock
Tell us your motor power, shaft diameter, and operating environment. Our New South Wales coupling team confirms availability and pricing within one business day, with same-day dispatch on standard sizes from Condell Park.
Ever Power Flange Couplings Australia Ltd. · 27 Harley Crescent, Condell Park NSW 2200 · [email protected]
