Description
The SWP-E is the long-flex double-flange variant of the SWP universal joint coupling family — combining the axial compliance of long-flex telescoping construction with the double-flange hub configuration that provides secure rigid connection at both shaft ends. Two bending joints handle total operating angles up to 90 degrees. The double-flange construction is the engineering choice for agricultural machinery, construction equipment, and automotive applications requiring secure flanged connection at both ends of the driveline.
SWP-E Specifications and Dimensional Range
The SWP-E range covers gyration diameters from 160 mm to 550 mm. Maximum operating angle reaches 90 degrees through the double-joint geometry. The long-flex telescoping intermediate accommodates substantial axial movement during operation. Torque ratings match the equivalent SWP-A long-flex variant for any given gyration diameter.
| Model | Gyration Ø D (mm) | Nominal Torque Tn (kN·m) | Fatigue Tn Tf (kN·m) | Flex Angle β (°) | Bore D₂ (mm) | Lmin (mm) |
|---|---|---|---|---|---|---|
| SWP160E | 160 | 16 | 8.0 | ≤90° | 20–95 | 490 |
| SWP180E | 180 | 20 | 10 | ≤90° | 30–105 | 560 |
| SWP225E | 225 | 63 | 31.5 | ≤90° | 40–125 | 680 |
| SWP250E | 250 | 90 | 45 | ≤90° | 50–140 | 750 |
| SWP285E | 285 | 160 | 80 | ≤90° | 60–155 | 850 |
| SWP315E | 315 | 250 | 125 | ≤90° | 65–160 | 920 |
| SWP350E | 350 | 400 | 200 | ≤90° | 80–185 | 1000 |
| SWP450E | 450 | 800 | 400 | ≤90° | 100–230 | 1220 |
| SWP550E | 550 | 1,250 | 625 | ≤90° | 130–280 | 1480 |
The double-flange construction adds approximately 80 to 120 mm to the overall installed length compared to single-flange variants, with both ends providing the secure bolt-on hub connection that agricultural and construction equipment require for vibration-resistant joint integrity.
SWP-E Long Flex Double Flange Type Universal Joint Coupling – two bending joints, double-flange construction. Ever Power Flange Couplings Australia Ltd.
What Distinguishes the SWP-E from Other Universal Joint Types
The SWP-E combines three specific engineering choices: long-flex telescoping construction, double-joint geometry, and double-flange hub connection. The long-flex accommodates substantial axial movement during operation; the double-joint handles total operating angles up to 90 degrees; the double-flange construction provides secure rigid connection at both shaft ends. This combination is the engineering default for high-vibration applications where the standard single-flange variants would not retain torque integrity throughout the service life.
Agricultural machinery, construction equipment, and certain automotive applications all match this profile. The double-flange design ensures both hub-to-shaft connections retain bolt preload under the impact and vibration loading these applications encounter. Where single-flange variants might develop joint micromovement and consequent fretting wear, the double-flange construction maintains joint integrity through the design service life.
Why Double-Flange Construction Matters for High-Vibration Service
Single-flange universal coupling variants connect through a flanged hub at each shaft end — torque is transmitted from the shaft into the flange interface, then into the yoke. Under high-vibration loading, joint micromovement at the flange interface can develop, leading to fretting wear and eventual loss of joint integrity. The double-flange construction distributes the torque path across two flanged connections per end, eliminating the single-point failure mode and extending joint service life proportionally.
Construction and Material Specification
Material specification follows the SWP family standard: 35CrMo alloy steel forging for yokes and trunnion crosses, full quench-and-temper heat treatment, induction-hardened journals and spline teeth to HRC 58-64. Four trunnion crosses (two per Hooke’s joint) plus the telescoping splined intermediate shaft.
Sealed needle roller bearings are pre-lubricated at assembly. Both flange hub faces are machined to ISO surface finish standards. Flange bolts are high-tensile structural fasteners (Property Class 10.9 or 12.9) with locking compound applied during installation. The double-flange arrangement uses double the bolt count of single-flange variants, distributing preload across more fasteners.
Two flanged hub interfaces provide secure rigid connection. Distributes torque path across more fasteners. Eliminates single-point failure mode of single-flange variants under high-vibration loading.
Double Hooke’s joint geometry handles total operating angles up to 90 degrees. Each joint operates at half the total angle.
Extended axial travel range accommodates substantial shaft-centre distance variation during operation. Suitable for installations with significant thermal growth or load-induced shaft movement.
Covers heavy agricultural machinery, construction equipment, and automotive driveline applications.
Four trunnion crosses in induction-hardened 35CrMo alloy steel. Same material specification as the SWP family.
Double-flange construction maintains bolt preload under high-vibration loading. Locking compound on bolt threads. Sealed needle bearings withstand impact loading.
Industrial Applications Across Heavy Industry
SWP-E applications cluster around high-vibration drivelines requiring both extreme operating angles and substantial axial compliance. Agricultural machinery, construction equipment, and certain automotive applications all match this profile.
Agricultural Machinery Drivelines
Heavy agricultural machinery — large tractors with PTO connections, self-propelled harvesters, large balers — operates with continuously varying driveline angles and substantial vibration loading. The SWP-E double-flange construction maintains joint integrity through the long service intervals that agricultural equipment requires. The long-flex telescoping accommodates the substantial axial movement between tractor and implement during work.
Construction Equipment and Automotive Applications
Construction equipment with articulated boom geometry, articulated steering systems, and heavy-duty automotive applications specify SWP-E couplings for the combination of double-flange security, double-joint operating angle, and long-flex axial compliance. Mining haul truck drivelines, large earth-moving equipment, and certain heavy industrial vehicle applications all use this variant.
SWP-E double-flange construction – two flanged hub interfaces for secure rigid connection at both shaft ends.
Selecting the Correct SWP-E Size for Your Drive
Choose SWP-E when the application requires extreme operating angles, substantial axial compliance, and double-flange joint integrity for high-vibration service. The combination of three engineering benefits — double joint, long flex, double flange — is the engineering default for the most demanding articulated driveline applications.
Verify both flange interfaces match the SWP-E hub specifications. Verify the calculated operating angle envelope sits within the 45-degree per-joint capability. Verify the expected axial movement sits within the long-flex telescoping range. Specify the appropriate surface treatments and lubricant grades for the operating environment.
Installation, Operation, and Maintenance Best Practice
Installation requires attention to all four flange interfaces (two per hub) and the equal-and-opposite joint angle relationship. The double-flange construction approximately doubles the bolt torque application time compared to single-flange variants.
Confirm all four flange interfaces (two per hub) match SWP-E hub specifications. Clean all flange faces. Apply locking compound to all bolt threads as specified.
Map the full range of operating angles. Verify both joints will operate within their 45-degree per-joint envelope. Confirm equal-and-opposite joint angle relationship throughout the operating envelope.
Lift coupling into position. Engage pilot register of each hub with corresponding shaft flange. Verify smooth pilot engagement at all four interfaces.
Install all flange bolts in cross pattern at each interface. Torque to 30, 60, 100 percent of final value at each of the four interfaces. Use a calibrated torque wrench.
Verify the long-flex telescoping shaft moves through its full axial travel range. Articulate the driveline through its full range of motion to verify smooth operation.
Run at progressively increasing speed through full operating envelope. Monitor vibration and temperature. Inspect all bolt torque at first scheduled maintenance — high-vibration service may require torque verification at shorter intervals than typical industrial drives.
OEM Cross-Reference and Order Specification
Cross-reference is available for Voith Turbo double-flange cardan shafts, Rexnord articulated double-joint universal couplings, and major agricultural/construction equipment OEM driveshaft specifications. Provide OEM model code, gyration diameter, nominal torque, operating angle range, and flange interface dimensions.
For agricultural and construction equipment applications, specify operating environment (dust, mud, water exposure, temperature range), required lubricant type, and seal grade at order specification.
Why Choose Ever Power Australia
Ever Power Flange Couplings Australia Ltd. supplies SWP-E couplings for Australian agricultural, construction, and heavy automotive applications from our Sydney warehouse. Cross-reference work for major OEM driveshaft specifications is included as a standard service. Field-service kits including spare trunnion crosses, bearings, and locking compound are stocked at Condell Park.
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-E rather than SWP-A? +
2. Why does double-flange construction matter? +
3. How much extra installation time does double-flange require? +
4. Is the SWP-E suitable for heavy automotive driveline applications? +
5. How quickly can I receive an SWP-E 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]
