ISO 9001:2015 Certified · Nashik, India
Rubber Bushes and Bushings,
Manufactured in India
Margo Rubber Products moulds silent-block, bonded and insulation bushes to your bore, outer diameter and durometer at its ISO 9001:2015 certified plant in Nashik, India — including AEM, the compound Margo supplies to Mahindra & Mahindra.
Send a Bush Drawing- AEM · NR · NBR · EPDM
- Primary compounds
- Bonded · Unbonded
- Both processes in-house
- 8–40 mm bore
- 20–80 mm OD, cut to print beyond
- Cut to print
- From your drawing
What sizes and hardness do Margo's rubber bushes come in?
Silent-block bushes run 8–20 mm bore by 20–40 mm outside diameter, insulation bushes 10–30 by 25–60 mm, and linkage bushes 12–40 by 30–80 mm. Durometer runs 45 to 75 Shore A and is set on your drawing, because hardness sets the rate. Dimensions are held to ISO 3302-1, class M1 to M4.
02 · SPECIFICATION REFERENCE
Bush Types, Sizes and Construction
A bush is specified by inner bore, outer diameter, length and durometer, and a bonded bush additionally by the metal insert drawing. Send those and we will quote it. Compound is a separate choice — any of our eight is available at any size and in any construction below.
| Silent-block bush | Bonded, inner sleeve | 8–20 × 20–40 mm | Suspension arms, engine links, chassis pivots |
|---|---|---|---|
| Insulation bush | Bonded or unbonded | 10–30 × 25–60 mm | Engine and transmission insulation, electrical isolation at a fixing |
| Linkage bush | Unbonded | 12–40 × 30–80 mm | Weather-exposed linkages and control rods |
| Oil-contact bush | Bonded or unbonded | 8–25 × 20–50 mm | Mountings in or near oil and hydraulic fluid |
| Flanged bush | Unbonded | 8–40 × 20–80 mm | Where the bush also takes an axial face load |
| Shackle / spring eye bush | Bonded, inner sleeve | Per drawing | Leaf spring eyes and shackle pins |
| Double-sleeve bush | Bonded, inner and outer sleeve | Per drawing | High radial and torsional load, press-fit housings |
| Cut-to-print bush | Per drawing | Per drawing | Bespoke geometry, insert supplied or made to your drawing |
Showing 8 of 8 entries. Durometer across the range is 45 to 75 Shore A, set on your drawing — it is what sets the rate, so a bush that is too hard transmits and one that is too soft wanders. A bonded bush needs the metal insert drawing with the rubber drawing; the bond line and the insert finish decide whether the part survives, and we cannot quote one without the other. Dimensional conformity to ISO 3302-1, class M1 to M4, as recorded on the drawing. Values are typical for the type and are not a specification for a particular part; see our technical disclaimer.
03 · MATERIAL SELECTION
Which Bush Material Do I Need?
A bush is chosen for how it behaves under repeated load and what surrounds it. Natural rubber and AEM cover most of what we make here; the others are what you move to when oil, weather or temperature rules them out. Name the duty and the environment and we will tell you which to specify.
- Temp. Range
- −20° to +90°C
- Hardness
- 30–80 Shore A
Polyisoprene, and the standard silent-block compound. The highest resilience and best fatigue life of the eight, with the lowest dynamic-to-static stiffness ratio — the property that decides whether a bush behaves in service the way it did on the rate curve. Not for oil, fuel or sustained heat.
- Temp. Range
- −40° to +175°C continuous to 160°C
- Hardness
- 50–80 Shore A
Ethylene acrylic elastomer. Holds its properties where oil, heat and ozone act together — the condition under a bonnet, and the one that ends a natural rubber bush.
- Temp. Range
- −30° to +120°C
- Hardness
- 40–90 Shore A
Nitrile butadiene rubber, the general-purpose industry standard. Outstanding resistance to petroleum oils and hydraulic fluids at moderate temperature — the choice for a mounting that sits in oil. Dynamic behaviour is a compromise against natural rubber, so specify it for the oil, not for the ride.
- Temp. Range
- −40° to +120°C
- Hardness
- 40–90 Shore A
Polychloroprene. Balanced across weather, ozone and moderate oil at once, which is what an exposed chassis or linkage bush actually faces. Slightly stiffer and less resilient than natural rubber, and worth the trade outdoors. Also the family we reach for when flame retardancy is specified.
- Temp. Range
- −40° to +140°C
- Hardness
- 40–90 Shore A
Ethylene propylene diene rubber, the preferred material for weather-exposed linkages and anything near water, steam or coolant, with excellent ozone and UV resistance. Higher damping and lower resilience than natural rubber. Not for petroleum oils.
- Temp. Range
- −30° to +100°C
- Hardness
- 40–90 Shore A
Styrene butadiene rubber. Abrasion resistance at low cost, blended with natural rubber where a bush takes rubbing contact rather than carrying a rate. Not for oil or fuel contact.
- Temp. Range
- −20° to +250°C continuous to 200°C
- Hardness
- 60–90 Shore A
Fluorocarbon rubber, the first choice for aggressive chemical environments. High cost, high damping loss and low resilience, so it is rarely specified for a bush — it appears here because we mould it, and because a bush in a chemical or fuel environment occasionally needs it.
- Temp. Range
- −60° to +220°C
- Hardness
- 30–80 Shore A
Vinyl methyl silicone, the widest service range of the eight. Poor tear and fatigue resistance, and a bonded part in silicone tends to fail at the bond line, so it is rarely specified for a bush — use it for a static high-temperature spacer rather than a loaded pivot.
04 · IN THIS CATEGORY
Bushes We Make to Order
Each part below is manufactured to customer drawing or to our standard tooling. Bore, outer diameter, length, durometer and insert geometry are set from your specification, and full dimensional data is issued with the quotation.
02
Silent-Block Bushes
Bushes · Made to order
03
Suspension Arm Bushes
Bushes · Made to order
04
Shackle Bushes
Bushes · Made to order
05
Spring Eye Bushes
Bushes · Made to order
06
Torque Rod Bushes
Bushes · Made to order
07
Stabiliser Bar Bushes
Bushes · Made to order
08
Engine Mounting Bushes
Bushes · Made to order
09
Transmission Insulation Bushes
Bushes · Made to order
10
Linkage & Control Rod Bushes
Bushes · Made to order
11
Flanged Bushes
Bushes · Made to order
12
Double-Sleeve Bonded Bushes
Bushes · Made to order
13
Bonded Bushes — Inner Sleeve
Bushes · Made to order
14
Unbonded Press-Fit Bushes
Bushes · Made to order
15
Electrical Isolation Bushes
Bushes · Made to order
16
Pump & Motor Mounting Bushes
Bushes · Made to order
17
Agricultural Implement Bushes
Bushes · Made to order
18
Cut-to-Print Bushes
Bushes · Made to order
05 · COMMERCIAL TERMS
Lead Times and How We Quote
Margo produces in bulk against OEM schedules. Send the bore, outer diameter, length and durometer with your volume — and for a bonded bush, the metal insert drawing. Minimum run is 10,000 pieces per part number, per compound, or quoted against the part where size or complexity sets the economics. Prototype and first-article lots sit outside the minimum and are quoted separately.
Quotation
With feasibility report
48 hrs
Prototype
From an approved drawing
48–72 hrs
Existing tooling
Ex-works Nashik · 2 weeks express
3–4 weeks
New tooling
Mould and insert fixture quoted separately
3–4 weeks + tooling
Packaging
Bulk or partitioned carton on request
Poly bag + card label
Guides
Further Reading
Rubber-to-Metal Bonded Parts: Design & Specification Guide
Covers bond geometry, surface preparation and the failure modes that decide whether a bonded part lasts — across the five applications where the bond is the part. No load-rating table: a load rating belongs to a part, not to a bond. We bond in-house — bushes, mounts and bonded seals — so the guide is written from the tooling and the process rather than from a textbook.
06 · ENQUIRIES
Request Bush Specifications
Send your drawing with the bore, outer diameter, length and durometer — plus the metal insert drawing for a bonded bush — or the bush you are replacing, with a note of how it failed. Our engineering team responds within 48 hours with dimensional confirmation, a recommended compound and hardness, and a quotation.