SistematikWork
Home / Manufacturing / How Compression Molding Works / Engine Mount

How an Engine Mount Is Made

Primary process: Compression Molding. The full route, materials, tolerances and design tips for an engine mount, with an indicative cost.

Compression MoldingPrimary process
PolymerFamily
7Route steps
+/-0.2mmTypical tol.

An engine mount is primarily made by Compression Molding. Compression moulding presses a measured charge of material into a heated mould that closes and cures or sets it, common for thermoset and rubber parts. Below is the full route to make an engine mount, the materials it suits, the tolerances to expect and the main design points. The route is free, from the finder.

Step by step

How an engine mount is made

The usual route, raw material to finished part. The amber step is where the engine mount gets its basic shape.

  1. Material

    Select the polymer grade and colourant for the engine mount.

  2. Tooling

    Cut the steel or aluminium mould that forms the engine mount.

  3. Compression Molding

    Press the charge in the heated mould and cure to make the engine mount.
    Tooling Medium to high   Tolerance ±0.1 to 0.5mm   Lead 6 to 12 weeks

  4. Trim

    Trim the edges, flash and any waste material.

  5. Secondary

    Where the engine mount needs them, add inserts, printed graphics or machined details.
    Tooling None   Tolerance ±0.125mm, to ±0.025mm   Lead 1 to 10 days

  6. Assembly

    Where the engine mount joins other parts, snap-fit, weld or bond it into the finished product.
    Tooling Low   Tolerance good   Lead immediate

  7. Inspection

    Check fit, finish and any functional dimensions.

Need the real cost for an engine mount? The free route above is yours. Unlock the full dossier to quote and source it.

Unlock for $2
Precision

Tolerances to expect

TYPICAL TOLERANCE IT CAN HOLD
+/-0.2mm typicalcoarsefine+/-1mm+/-0.1mm+/-0.01mm+/-0.005mm
Where this process typically lands. Tighter is possible with extra operations like grinding, at higher cost.
Materials

Materials for an engine mount

GradeWhy it suits this
NBR (nitrile)Oil resistant
EPDMWeather, water
SiliconeTemperature, food/medical
Design

Design tips

General pointers. The full design-for-manufacturing list for an engine mount is in the dossier.

  • Sharp corners on a seal. Radius them.
  • Over-tight dimensional tolerance. Use rubber tolerance grades.
Cost

What an engine mount should cost

Rubber seals and thermoset parts; robust molds, good for mid-to-high volume elastomer/thermoset parts.

PER-PART COST vs VOLUME
one-offat volumeVolume per order, low to highCost per part
Per-part cost drops as volume spreads tooling and setup over more parts. The exact figures for an engine mount at your volume, in your currency, are in the dossier.
MODEL EST.
$4.3 to 10 per part at 100 off
A rough ballpark only. The dossier gives should-cost at your exact volume and currency, with the full breakdown.
GET THE FULL DOSSIER

Everything you need to quote and source it

The free route above is yours. To actually put a number on an engine mount and buy it well:

  • Should-cost at your exact volume in 12 currencies, with the material, processing, tooling and overhead breakdown
  • Who to source from, typical MOQ and lead time, and the exact RFQ checklist to send
  • A quote checker that tells you if a supplier quote is fair, and the red flags to watch
  • The full DFM list and a ready-to-send RFQ draft
Unlock the engine mount dossier for $2Or go Pro, every part, from $15/mo

One part is $2, once. Pro is every part, plus the tracker, compare and sync. Cancel anytime.

Related

Related parts made the same way

bakelite knobbmc partbrake padcircuit breakerclutch facingcutting disccv bootdiaphragmdistributor capeva midsolegasketgasket molded
BEYOND MANUFACTURING

41 verified industrial-engineering tools

SistematikWork is a whole IE platform. Past the free finder, there are 41 ready Excel calculators, templates and CAD guides, each built from real coursework and checked against known values.

Manufacturing & OperationsQuality & ReliabilitySupply ChainProject & StatisticsEngineering Career
Browse all 41 toolsGet the complete toolkit

See also: How Compression Molding works and the full route for an engine mount in the finder.

FAQ

Frequently asked questions

How is an engine mount made?
An engine mount is primarily made by compression molding. The route is: Material; Tooling; Compression Molding; Trim; Secondary; Assembly; Inspection.
What does an engine mount cost?
It depends on size, tolerance and volume. As a rough ballpark it starts around $4.3 to 10 per part at 100 off and falls with quantity. The dossier gives should-cost at your exact volume and currency. A model estimate, not a quote.
What material is an engine mount made from?
Common choices are NBR (nitrile); EPDM; Silicone.
What is the main process for an engine mount?
Compression Molding. Rubber seals, composite panels, electrical parts and silicone moulds in medium volume.
See the exact route and should-cost for your part

The free finder maps your part to its process and full route. Pro adds should-cost at your volume, sourcing and an RFQ draft.

Open the finderSee Pro