One pressure column for every quote
Reject a comparison that translates hydraulic working pressure, machine injection pressure and cavity pressure into one unlabeled field. Preserve the original term and measurement location.
G18
INJECTION / QUOTE NORMALIZATION
Normalize injection-pressure quotes by exact injection unit and screw diameter.
A maximum pressure number cannot be compared apart from its machine model, injection-unit and screw/cylinder configuration, pressure definition, force basis, flow, shot volume, simultaneous limits and test method. Keep hydraulic-drive, melt-process and cavity-pressure fields separate throughout the RFQ.
ANSWER FIRST
Build one configured quote row—not a best-of-brochure number.
Two quotes are comparable only when their pressure fields refer to the same kind of quantity and each value stays attached to the exact offered injection unit and screw diameter. Put force, flow, shot volume, availability and test basis in the same row; mark an unresolved field as non-comparable.
Open the multi-quote comparison toolPressure-quote release gate
- Exact machine, injection unit and drive
- Screw/cylinder code and screw diameter
- Original pressure label, location and value status
- Force, flow, speed, shot volume and stroke
- Simultaneous-limit statement and source revision
- Configured test and project acceptance method
TERM / LOCATION / BASIS
Four pressure labels must remain four separate records.
If a supplier uses another label such as “specific injection pressure,” request its written definition instead of mapping it to one of these fields by assumption.
| Pressure field | Location or basis to confirm | Quote-record rule | Do not treat it as |
|---|---|---|---|
| Maximum injection pressure | An injection-unit capability field only after the supplier states its definition, pressure location and whether it is a calculated, settable or measured maximum. | Keep the supplier's exact label and unit. Attach the machine model, injection-unit designation, screw/cylinder code and screw diameter. | Do not relabel it as hydraulic working pressure, nozzle pressure, filling pressure or cavity pressure. |
| Hydraulic working pressure | Pressure in the applicable hydraulic drive circuit. EUROMAP 1 lists this separately from injection pressure and injection-unit geometry. | Record the circuit, drive arrangement, source document and manufacturer-confirmed relationship to the quoted injection field, if one is supplied. | It is not a universal proxy for melt pressure, and the same field may not exist for an all-electric injection drive. |
| Filling, holding or back melt pressure | A process-stage field whose name and basis must stay visible. EUROMAP 5 describes these melt-pressure entries using theoretical force and screw/piston area. | Record the stage, setpoint or observed state, screw diameter, force basis, profile and source revision. | A process setting or calculated melt-pressure field is not automatically a directly measured pressure and is not cavity pressure. |
| Cavity pressure | Pressure inside the mold cavity. Its meaning depends on the sensor or analysis point, measurement method and time in filling, compression or holding. | Record mold revision, sensor type and position or simulation node, material, gate, process stage, sampling basis and curve or result file. | It cannot be substituted with the machine's maximum injection-pressure field or one unlocated process-screen value. |
CONFIGURED QUOTE ROW
Normalize pressure, force, flow and shot data together.
This worksheet deliberately keeps the original value beside the definition and evidence state. It does not manufacture a missing conversion or specification.
| Comparison field | Record from each supplier | Why it stays in the same row |
|---|---|---|
| Machine identity | Manufacturer, model, revision and clamping configuration exactly as offered | Prevents a value from a family brochure or another model from entering the comparison. |
| Exact injection unit | Injection-unit designation, drive arrangement and every option that changes the data table | Clamp size alone does not identify the installed injection capability. |
| Screw and cylinder identity | Screw/cylinder code, screw diameter, effective geometry identifier and material-specific option where applicable | Pressure, calculated stroke volume and flow fields can change across screw/cylinder configurations on one machine model. |
| Pressure field identity | Supplier's original label, pressure location, process stage, unit and definition | Stops hydraulic, melt, nozzle and cavity fields from being merged under one translated heading. |
| Value status | Maximum, settable limit, theoretical calculation, displayed value or measured result | A catalogue ceiling and a result from a molding cycle are different evidence states. |
| Injection force basis | Quoted force or drive limit, calculation or measurement method and configuration to which it applies | A pressure comparison cannot be audited when its force and area basis are missing. |
| Injection flow and speed | Original flow and screw-speed fields, units, profile basis, acceleration limits and configured screw diameter | Pressure availability does not by itself establish volumetric delivery or fill response. |
| Shot volume and stroke | Calculated stroke volume, screw stroke and any shot-weight reference material or density basis | A different screw can change both the pressure column and the volume available per stroke. |
| Simultaneous-limit statement | Written confirmation of which pressure, flow, speed and other maxima can occur together | The highest values in separate rows may be mutually exclusive or tied to different drives and options. |
| Source and test basis | Controlled data-sheet revision, applicable method, material, melt condition, instrument, stroke window and result owner | Comparable names do not create comparable results when the method and conditions differ. |
| Project requirement | Resin grade and condition, total shot, mold/gate, target profile, fill and hold criteria, quality limits and cycle state | Machine capability still has to be checked against the intended molding job. |
| Open evidence and acceptance | Unknowns, responsible owner, due date and configured-machine or mold-trial confirmation step | An unresolved field remains a hold point instead of being filled with an assumed conversion. |
REJECTED SHORTCUTS
Four shortcuts create a false pressure comparison.
Keep the gap visible and return it to the supplier or responsible process owner. An open field is safer than a precise-looking assumption.
One ratio for hydraulic-to-melt pressure
Do not apply a universal multiplier. Any relationship depends on the exact drive, geometry, controls, calibration and manufacturer definition, and may not apply to an electric drive.
A best-of-brochure composite
Do not combine the highest pressure, highest flow and largest shot volume when they come from different screw, injection-unit or drive columns. Require one offered configuration row.
A universal recommended pressure
Do not turn a material guide, simulation output or another machine's process into a guaranteed setting. The intended resin, mold, profile, quality result and responsible process review control the project basis.
EVIDENCE / ACCEPTANCE
Move from a supplier field to a configured molding result.
The acceptance record proves only the agreed configuration and conditions. Any screw, cylinder, drive, material, mold or profile change reopens the affected comparison.
| Gate | Evidence to record | Boundary |
|---|---|---|
| Document match | Offered model, injection-unit and screw/cylinder identities match the current quotation, drawing, data sheet and order baseline. | A matching document set verifies identity only; it does not prove the molding result. |
| Field-definition review | Supplier confirms the pressure label, location, maximum/set/measured status, force basis and applicable drive or calculation method. | If the definition remains ambiguous, keep the field non-comparable. |
| Combination review | Supplier identifies which stated pressure, flow, speed and shot-volume conditions are available together on the offered configuration. | Separate catalogue maxima are not treated as one operating point. |
| Representative molding trial | Agreed machine configuration, resin condition, mold, gate, shot, profile, limits, instruments, sampling plan and part-quality criteria. | The trial supports only the recorded configuration and conditions; it is not a universal machine-performance claim. |
| Release record | Original and normalized values, traces, deviations, open actions, approvals and any configuration change that triggers retest. | No unresolved pressure basis, borrowed OEM value or assumed conversion is closed by this worksheet. |
PRIMARY SOURCES / BOUNDARY
Use field definitions, methods and named-OEM examples without transferring capability.
Reviewed 31 July 2026. EUROMAP supplies historical field and method structures; the ARBURG and FANUC documents show why a named model's injection data stays attached to its screw and injection-unit configuration; Kistler distinguishes pressure measured inside the mold. None proves a NEW ORIENTAL IMM model, value, option, test result or delivered application.
EUROMAP 1 (1983) — Description of Injection Moulding Machines
Lists screw or piston diameter, maximum injection pressure and calculated injection volume as injection-unit data, while listing hydraulic or pneumatic working pressure separately under the drive.
Boundary: This historical recommendation supplies a field structure, not a universal pressure conversion, current supplier specification or proof that any quoted value follows its definitions.
EUROMAP 4 (1994) — Determination of the Actual Injection Efficiency
Separates theoretical injection capacity and power from actual injection power and defines a comparison method using an adjustable orifice, pressure sensor, stated screw stroke, HDPE and melt condition.
Boundary: The method does not make untested catalogue maxima equivalent. A supplier must identify whether a value was determined under this method and preserve the exact configuration and conditions.
EUROMAP 5 (1994) — Manufacturing Report
Requires machine manufacturer, type, EUROMAP size and screw/piston diameter in the manufacturing record and describes filling, holding and back pressure as melt-pressure fields with a stated force/area basis.
Boundary: Those process-report fields are not cavity-pressure measurements and do not authorize a universal conversion or a NEW ORIENTAL IMM value.
ALLROUNDER 370 S — Technical Data
The named OEM table places injection pressure, injection flow and calculated stroke volume under specific injection-unit and screw-diameter columns and warns that some maximum pressure and maximum flow combinations may be mutually exclusive.
Boundary: This is an ARBURG 370 S example only. Its options, values, relationships and test status must not be transferred to NEW ORIENTAL IMM or another model.
FANUC ROBOSHOT alpha-SiB Series — Specifications, including S15iB
The official matrix includes the S15iB and presents screw-specific injection fields. It states that maximum injection and pack pressure may vary with installed screw and cylinder specifications and that molding conditions may be restricted by screw diameter.
Boundary: This is a dated FANUC series example only. It does not establish a general rule, a recommended pressure or any NEW ORIENTAL IMM configuration or performance.
Cavity Pressure — Measurement Inside the Injection Mold
Defines cavity pressure as pressure inside the injection mold and describes a pressure profile across injection, compression and holding, measured with sensors integrated into the mold.
Boundary: Sensor type, location and measurement basis remain project-specific. This source does not make cavity pressure equal to a machine maximum or prove a supplied monitoring system.
BUYER QUESTIONS
Injection-pressure quote comparison FAQ
These answers keep injection-unit capability, hydraulic-drive data, process fields and in-cavity evidence in separate records.
01Are injection pressure, hydraulic pressure and cavity pressure the same?+
No. They can refer to different locations, hardware and evidence states: an injection-unit field, a hydraulic drive-circuit field and pressure inside the mold cavity. Keep the supplier's original label, definition, location, unit and test or calculation basis.
02Can hydraulic pressure be converted to injection pressure with one ratio?+
Not with a universal ratio. A defensible relationship requires the exact machine and injection unit, drive geometry, screw diameter, control and calibration basis, plus a manufacturer-confirmed method. An all-electric injection drive also cannot be forced into the same hydraulic field.
03Why must a pressure quote include screw diameter?+
Because screw diameter and the exact screw/cylinder and injection-unit configuration are part of the force, pressure, calculated stroke-volume and flow basis. Named OEM data sheets show those fields in configuration-specific columns; their numbers are not transferable to another machine.
04Can maximum injection pressure and maximum injection flow be compared together?+
Only after the supplier confirms they are simultaneously available on the exact offered configuration and states the method and conditions. An official ARBURG data sheet explicitly warns that certain maximum pressure and maximum flow combinations may be mutually exclusive.
05Which pressure belongs in a clamp-force screen?+
Use a documented cavity-pressure basis approved for the intended mold and process, not the machine's maximum injection-pressure field. The separate clamp-force guide records projected area, cavity-pressure source, distribution, tool loads and project-specific margin.
06What should a buyer request before accepting a pressure claim?+
Request the exact model, injection unit, screw/cylinder code and diameter, original pressure label and location, value status, injection force basis, flow/speed and shot-volume fields, simultaneous-limit statement, source revision, test conditions and project acceptance plan.
PRESSURE QUOTE / NEXT STEP
Send one complete row for every offered injection unit.
Attach the original data sheet, exact screw/cylinder and drive, pressure definition, force/flow/shot fields, simultaneous-limit statement, molding job and acceptance conditions. Unknowns remain open for supplier confirmation.
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