related-product-inchSYZ-F020 Rebuildable Flex Joint
REBUILDABLE FLEX JOINT Product Overview
SYZ-F020 is a rebuildable flex joint with 2-5/8″ mounting width, 5/8″ bolt diameter, and 7/8″-14 × 3.5″ thread length. Housing OD = 2.68″. Bushing material: Polyurethane.
The SYZ flex joint uses a 4130 heat-treated chromoly steel housing, a chromoly hard-chrome-plated ball, and a Polyurethane bushing. The rebuildable design allows the bushing to be replaced when worn, extending service life in heavy-pivot applications such as 4-link suspension, panhard bars, and chassis-to-axle connections. Features a stainless steel threaded spanner nut design. Both right-hand and left-hand thread configurations are available.
Replacement bushings available separately. Custom housing sizes available on request. Polyurethane bushing provides good vibration damping; Delrin (acetal) bushing offers lower friction and tighter tolerance. Weldable sleeve configuration also available.
REBUILDABLE FLEX JOINT Series — Full Size Range
All available sizes in the REBUILDABLE FLEX JOINT series. Can’t find your size? Contact us for custom dimensions.
| Part Number | Mounting Width W | Bolt Dia. B | Thread UNF | Thread Length C | Housing O.D. D | Bushing Material | Offset Angle |
|---|---|---|---|---|---|---|---|
| SYZ-F001 | 2-5/8" | 9/16" | 1 1/4"-12 | 5" | 3" | Polyurethane | 0 |
| SYZ-F002 | 2-5/8" | 9/16" | 1 1/4"-12 | 5" | 3" | Polyurethane | 10 |
| SYZ-F003 | 2" | 7/16" | 7/8"-14 | 3.15" | 2.36" | Polyurethane | 0 |
| SYZ-F004 | 2-5/16" | 9/16" | 7/8"-14 | 3.15" | 2.36" | Polyurethane | 9 |
| SYZ-F005 | 2-5/8" | 9/16" | 1 1/4"-12 | 3.5" | 2.68" | Delrin | - |
| SYZ-F006 | 2-5/8" | 9/16" | 1"-14 | 3.5" | 2.68" | Delrin | - |
| SYZ-F007 | 2-5/8" | 9/16" | 7/8"-14 | 3.5" | 2.68" | Delrin | - |
| SYZ-F008 | 1.6" | 9/16" | 1"-14 | 2.6" | 2.1" | Delrin | - |
| SYZ-F009 | 1.6" | 9/16" | 7/8"-14 | 2.6" | 2.1" | Delrin | - |
| SYZ-F010 | 1.6" | 9/16" | 3/4"-16 | 2.6" | 2.1" | Delrin | - |
| SYZ-F011 | 1.6" | 7/16" | 1"-14 | 2.6" | 2.1" | Delrin | - |
| SYZ-F012 | 1.6" | 7/16" | 7/8"-14 | 2.6" | 2.1" | Delrin | - |
| SYZ-F013 | 1.6" | 7/16" | 3/4"-16 | 2.6" | 2.1" | Delrin | - |
| SYZ-F014 | 7/8" | 3/4" | 3/4"-16 | 2.6" | 2.1" | Delrin | - |
| SYZ-F015 | 2-5/8" | 9/16" | 1 1/4"-12 | 3.5" | 2.68" | Polyurethane | - |
| SYZ-F016 | 2-5/8" | 9/16" | 1"-14 | 3.5" | 2.68" | Polyurethane | - |
| SYZ-F017 | 2-5/8" | 9/16" | 7/8"-14 | 3.5" | 2.68" | Polyurethane | - |
| SYZ-F018 | 2-5/8" | 5/8" | 1 1/4"-12 | 3.5" | 2.68" | Polyurethane | - |
| SYZ-F019 | 2-5/8" | 5/8" | 1"-14 | 3.5" | 2.68" | Polyurethane | - |
| SYZ-F020 | 2-5/8" | 5/8" | 7/8"-14 | 3.5" | 2.68" | Polyurethane | - |
Every Unit Inspected Before Shipment
Raw Material Inspection
Material certifications verified. Composition confirmed by spectrometer before machining begins.
Thread Gauge Inspection
100% go/no-go gauge check on all threaded sections. Zero tolerance on dimensional non-conformance.
Load Capacity Test
Static and dynamic load tests run on representative samples from each production batch.
Dimensional Measurement
CMM verification of critical dimensions — ball diameter, bore, thread pitch, and body length.
Surface Inspection
Visual and tactile inspection for burrs, scratches, surface cracks, and plating defects.
Articulation Test
Misalignment angle and torque measured to confirm liner performance meets specification.
Heat Treatment Verify
Hardness tests confirm proper heat treatment on chromoly steel bodies and bearing balls.
Batch Documentation
Full traceability from raw material heat number to finished part. COC and inspection reports available.
Where REBUILDABLE FLEX JOINT Are Used
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REBUILDABLE FLEX JOINT Frequently Asked Questions
What is a rebuildable flex joint used for?
A rebuildable flex joint is used in suspension and articulated linkage assemblies where high-load movement and serviceable internals are required.
What materials are used in the housing and ball?
The housing uses heat treated 4130 chromoly steel with zinc plating, and the ball uses hard chrome plated 4130 chromoly steel.
Which bushing materials are available?
This series uses polyurethane or Delrin bushings depending on the intended compliance, wear behavior, and application setup.
What does the threaded spanner nut design do?
The threaded spanner nut design supports rebuildable service and controlled retention of the internal joint assembly on selected parts.
Which dimensions matter most for fitment?
Mounting width, bolt diameter, thread size, thread length, housing O.D., and the internal bushing configuration are the key fitment points.
Can SYZ support custom sizes or RH/LH options?
Yes. SYZ can review custom sizes and RH/LH thread requirements for OEM and fabrication programs.