Editorial Technical Reference

Stroke Length Adjuster / Speed Controller

This page explains how Stroke Length Adjuster / Speed Controller is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A control component for dosing pumps or feeders that regulates both the stroke length and operational speed to precisely control fluid or material delivery rates.

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Product Specifications

Technical details and manufacturing context for Stroke Length Adjuster / Speed Controller

Definition
The Stroke Length Adjuster / Speed Controller is a control component used in dosing pumps and feeders. It combines two adjustment functions: stroke length (the distance traveled by the pump piston or diaphragm) and operational speed (the frequency of strokes per unit time). By adjusting these parameters, the component enables precise control of volumetric output, which is critical for accurate dosing of liquids, chemicals, slurries, or granular materials in industrial processes. This dual-parameter control helps maintain consistent flow rates, mixture ratios, and process stability. The component is typically integrated into the pump or feeder assembly and can be operated manually or via automated control signals. It is suitable for applications requiring adjustable dosing rates, such as chemical injection, water treatment, and material feeding. The component is available in configurations with stroke length ranges up to 100 mm and speed ranges up to 150 rpm, with adjustment accuracies of ±0.5% for stroke and ±1% for speed. It operates within a pressure range of 1.0–1.6 MPa and a temperature range of -20 to 80 °C. The standard supply voltage is 24 V DC (±10%), and it accepts a 4–20 mA analog control signal for remote adjustment. Enclosure ratings range from IP54 to IP65 (per IEC 60529), and the body is typically made of 316L stainless steel (per ASTM A240). The weight varies from 2.5 to 5.0 kg depending on configuration. Materials used include stainless steel, aluminum alloy, and engineering plastics such as POM and PTFE. Always verify model-specific values and standards with the legal manufacturer or supplier before procurement.
Working Principle
The component adjusts stroke length and speed through mechanical linkages, cam systems, or electronic servo mechanisms. Stroke length changes the displacement volume per cycle, while speed changes the cycle frequency. These adjustments work together: stroke length determines 'how much' per stroke, and speed determines 'how often' strokes occur. The controller interprets input signals (manual, analog, or digital) to position actuators that alter the pump's mechanical limits or motor speed, thereby defining the final output rate (Volume = Stroke Volume × Strokes per Minute).
Common Materials
Stainless Steel (for corrosion resistance), Aluminum Alloy (for lightweight housings), Engineering Plastics (e.g., POM, PTFE for seals and bushings)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Stroke Length Range0–100 mmAdjustable to control flow rate
Speed Range0–150 rpmAdjustable to control dosing frequency
Stroke Adjustment Accuracy±0.5 %Ensures precise dosing
Speed Adjustment Accuracy±1 %Maintains consistent flow
Operating Temperature-20–80 °COutside range may affect seals
Supply Voltage24 ±10% V DCStandard industrial control voltage
Control Signal4–20 mAAnalog input for remote control
Enclosure RatingIP54–IP65Protects against dust and waterIEC 60529
Body Material316LCorrosion-resistant stainless steelASTM A240
Weight2.5–5.0 kgDepends on configuration

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar
flow rate: 0.1 to 100 L/h
temperature: -20°C to 80°C
slurry concentration: Up to 60% solids by weight
Media Compatibility
✓ Water-based fluids ✓ Chemical solutions (pH 2-12) ✓ Food-grade slurries
Unsuitable: Abrasive slurries with hard particles >500 microns
Sizing Data Required
  • Required flow rate (L/h)
  • Fluid viscosity (cP)
  • Maximum system pressure (bar)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Hydraulic fluid leakage
Cause: Seal degradation due to thermal cycling, chemical incompatibility, or excessive pressure spikes
Position sensor drift/inaccuracy
Cause: Wear in mechanical linkages, electromagnetic interference, or contamination of optical/inductive sensing elements
Maintenance Indicators
  • Erratic or inconsistent stroke length during operation
  • Unusual hydraulic whining or knocking sounds from the actuator assembly
Engineering Tips
  • Implement condition-based monitoring with vibration analysis and fluid particle counting to detect early degradation
  • Establish preventive maintenance schedule for seal replacement and sensor calibration based on actual operating cycles rather than time intervals

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
CE Marking (EU Machinery Directive 2006/42/EC) ANSI B11.19 Performance Requirements for Risk Reduction and Safeguarding

Quoted from the published standard.

Manufacturing Precision
  • Stroke Length: +/-0.5% of total travel
  • Bore Diameter: +/-0.01mm (H7 tolerance class)
Quality Inspection
  • Dimensional Verification with CMM (Coordinate Measuring Machine)
  • Functional Endurance Test (500,000 cycles minimum)
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

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Manufacturers of Stroke Length Adjuster / Speed Controller

Manufacturer profiles associated with Stroke Length Adjuster / Speed Controller.

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Frequently Asked Questions

What is the function of the Stroke Length Adjuster / Speed Controller?

It regulates both the stroke length and operational speed of a dosing pump or feeder, allowing precise control of the delivery rate of fluids or materials.

What are the typical adjustment ranges?

The stroke length range is 0–100 mm, and the speed range is 0–150 rpm. Adjustment accuracy is ±0.5% for stroke and ±1% for speed.

What are the operating limits?

Operating pressure is 1.0–1.6 MPa, and temperature range is -20 to 80 °C. Supply voltage is 24 V DC (±10%), and control signal is 4–20 mA.

What materials are used?

Common materials include stainless steel (e.g., 316L), aluminum alloy, and engineering plastics like POM and PTFE. Verify material suitability for your application.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Related equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Dosing Pump or Feeder
View system integration details

Industrial Ecosystem & Supply Chain Structure

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Stroke Length Adjuster / Speed Controller.

Stroke and Speed Controller Dosing Pump Controller stroke length adjuster

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 12 October 2026

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