Buyers’ Guide · Bushings

Bushing Buyers’ Guide

A bushing is a sleeve or plain-bushing component that supports controlled rotation, oscillation, sliding contact, compliance or vibration management. This guide covers the bushing families in SYZ’s catalog—from engineered polymers to forged flex-joint assemblies—and how to choose the right one.

Bushing families: 4+
Polymer materials: Delrin · PU · UHMW
Forged flex-joint bodies: CBS / XBS
Machined to drawing: Custom

SYZ bushings—Delrin, polyurethane, UHMW and forged flex-joint families — **Plate 1.** SYZ bushing family—from engineered polymers to forged flex-joint assemblies. Source: Polymer bushings spec page

What Is a Bushing?

Definition

A bushing is a sleeve or plain-bushing component that supports controlled rotation, oscillation, sliding contact, compliance or vibration management in suspension links, control arms, machine pivots, cab mounts, pedals and articulated equipment.

SYZ’s bushing range spans two broad families: engineered polymer bushings (Delrin/POM, polyurethane, UHMW) for self-lubricating, corrosion-free pivots and spacers; and forged flex-joint bushings (CBS/XBS) for structural suspension links that need a replaceable, compliant pivot. Both families are backed by custom machining to sample or drawing.

Also called: Plain bearing · sleeve · spacer
Core function: Rotation, isolation, spacing, compliance
Families: Polymer + forged flex-joint
Custom: To sample or drawing

Bushing Families at a Glance

Structure

The SYZ bushing range maps to four practical groups—each solving a different mechanical problem.

2.1

Polymer Bushings

Delrin/POM, polyurethane and UHMW sleeves and pivots. Self-lubricating, corrosion-free, dimensionally stable. The broadest group—35 standard sizes plus custom.

2.2

Forged Poly Bushings

Forged steel (or chromoly) shank bodies holding a replaceable polyurethane bushing over a BOM sleeve. Structural flex-joint pivots for suspension links.

2.3

Rebuildable Flex Joints

Forged chromoly housing with hard-chromed ball and replaceable bushing—greasable in the field via zerk fitting (see the flex-joint type page). The serviceable alternative to sealed rod ends.

2.4

Mounting Hardware

Spacers, standoffs and bracket components that position and support bushings within their mounts.

Polymer Bushings

Self-lubricating · corrosion-free

Machined from engineered polymers for pivots and spacers that run dry, resist corrosion and damp vibration without grease.

A common choice for washdown and cab-mount joints where a plated steel bushing would corrode or run noisy—confirm chemical and temperature compatibility per material.

Series — Delrin/POM, polyurethane, UHMW

Forged Flex-Joint Bushings

Structural · rebuildable

A forged steel shank body holding a polyurethane bushing over a BOM sleeve—the structural pivot for off-road suspension links that must articulate and damp simultaneously.

When the polyurethane wears, press in a new bushing and reuse the body—the economics of rebuildable suspension.

Series — CBS (carbon steel), XBS (4130 chromoly)

What a Bushing Does in the Assembly

Function

Four engineering jobs—the material and family you choose decides which job dominates.

3.1

Provide a controlled pivot

Sleeve and plain bushings support rotation and oscillation with controlled clearance—the running fit is a material-and-dimension decision.

3.2

Isolate vibration

Polyurethane and polymer bushings damp road and machine vibration at the pivot instead of passing it into the chassis.

3.3

Carry structural loads

Forged flex-joint bodies carry the link’s working and shock loads while the compliant insert handles articulation.

3.4

Enable rebuild cycles

Rebuildable designs let you press in a new bushing and keep the housing—the economics of serviceable suspension.

Where bushings fail in the field

Material mismatched to load, temperature or chemical exposure—Delrin/POM and UHMW have continuous-use ceilings well below steel; check the grade against your duty.
Clearance copied from a steel bushing—polymers need their own running fit.
Rebuild intervals ignored—polyurethane ages and must be replaced; set a service interval based on duty cycle.
Over-compression at install, pre-loading the bushing to failure—set the sleeve length to the specified pre-load, not crushed.

The SYZ Bushing Range

Materials

From self-lubricating polymers to structural flex-joint assemblies—each family solves a different bushing problem.

Delrin / PU / UHMW

35 sizes + custom

Self-lubricating, corrosion-free machined bushings in three polymer grades. The broadest range—from precision spacers to suspension arm bushings. Example: SYZ-DEL, B 0.874, D 1.748, D2 2.244, W 0.846, T 0.25.

Best for Washdown pivots, replacement bushings, spacersExplore polymer bushings →

CBS / XBS

Forged flex-joint bodies

Forged steel (or chromoly) bodies with replaceable polyurethane bushing and BOM sleeve—structural, rebuildable, vibration-damping. Example: CBS-1, thread 5/8-18, bore 0.500, body A 1.750, length C 2.700.

Best for Off-road suspension linksExplore forged poly →

Rebuildable Flex Joints

Greaseable · 20 configs

Forged chromoly housing with hard-chromed ball and replaceable bushing—the flex-joint type page specifies a greaseable zerk fitting; confirm per configuration on the spec page.

Best for 4-link and 3-link off-road suspensionExplore flex joints →

Materials at a Glance

Surface treatment

Bushing materials span engineered polymers (self-lubricating, corrosion-free) and forged steel (structural, rebuildable). Each family’s dedicated guide covers material properties, dimensions and selection in detail—follow the links in the family table above or below.

Treatment	Applied to	Series examples	What it does

Material selection guides: polymer bushings · forged poly bushings · rebuildable flex joints

Where Bushings Perform

Applications

Anywhere a pivot, spacer or isolation mount makes the mechanism work better.

Suspension & Control Arms

Arm pivots and replacement bushings in polymer or forged flex-joint form.

CBS/XBSPolymer

Cab & Body Mounts

Vibration-isolating mounts on work vehicles and equipment.

Polyurethane

Off-Road Suspension

4-link and 3-link pivots where articulation and rebuild cycles matter.

Flex joints

Machinery & Fixtures

Precision spacers and pivots in process and packaging equipment.

DelrinUHMW

How to Choose: 5 Steps, Then the Family Table

Selection reference

Define the Job

Precision pivot → polymer. Vibration damping → polyurethane. Structural flex link → forged flex joint.

Set the Dimensions

Bore, OD, width—or send a sample/drawing for custom machining.

Check the Environment

Temperature, chemicals, UV, washdown—match the material’s limits.

Pick the Family

Polymer, forged flex joint or rebuildable flex joint—by structural demand and rebuild strategy.

Plan Maintenance

Polymers run dry but age; flex joints need grease and periodic rebuilds—set the interval.

Family	Type	Material	Best for	Where
SYZ bushing families
Polymer bushings	Delrin · PU · UHMW	Self-lubricating polymers	35 sizes + custom	View
Forged poly bushings	CBS / XBS flex-joint bodies	Polyurethane + BOM sleeve	Off-road suspension links	View
Rebuildable flex joints	Forged chromoly + ball + bushing	Polyurethane / Delrin	4-link and 3-link pivots	View

Related SYZ families: polymer bushings · forged poly bushings · rebuildable flex joints · rod end spacers

Get Selection Help

Bushing Buyers’ Questions

FAQ

Q1What is the difference between polymer bushings and forged poly bushings?

Polymer bushings are all-plastic (Delrin, PU or UHMW) spacers and pivots. Forged poly bushings are structural assemblies: a forged steel body with a replaceable polyurethane insert, used in suspension links that need both strength and compliance.

Q2Do polymer bushings need lubrication?

No—Delrin and UHMW are self-lubricating; polyurethane runs dry as well. At high load-and-speed, wear still occurs and the bushing is a maintenance item.

Q3Can I get custom bushing dimensions?

Yes—SYZ machines custom bushings to sample or drawing, in the material you choose, at CNC precision.

Q4What is a rebuildable flex joint?

A forged chromoly housing with a hard-chromed ball running on a replaceable polyurethane or Delrin bushing, with a zerk fitting for field greasing. When the bushing wears, you rebuild the joint instead of replacing it.

Q5Which material for outdoor use?

All three polymers resist corrosion. UHMW and Delrin excel in wet and chemical service; polyurethane adds damping but has UV and temperature limits.

Selecting Bushings?

Send us your dimensions, material and working environment—or the worn sample to remanufacture. SYZ engineers reply with the right bushing and factory-direct pricing.

Request a Quote Browse All Bushings