Pump Power End
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This page explains how Crosshead 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.
A reciprocating component in a pump's power end that converts the rotary motion of the crankshaft into linear motion for the plunger or piston.
Technical details and manufacturing context for Crosshead
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Stroke Length | 50–300 mm | Determines displacement volume |
| Plunger Diameter | 20–150 mm | Matches pump capacity |
| Maximum Operating Pressure | 10–35 MPa | Above 35 MPa requires special seals |
| Operating Temperature Range | -20–120 °C | Outside range affects lubrication |
| Surface Roughness (Sealing Surface) | Ra 0.2–0.8 µm | Critical for seal lifeISO 4287 |
| Hardness (Contact Surface) | 50–60 HRC | Wear resistanceISO 6508 |
| Material Grade | 42CrMo4 | High strength alloy steelEN 10083 |
| Weight | 15–80 kg | Affects inertia and handling |
| Center Distance | 100–400 mm | Must match pump frame |
| Thread Size (Plunger Connection) | M20–M80 | Standard metric threadISO 68-1 |
| Lubrication Flow Rate | 2–10 L/min | Insufficient flow causes overheating |
| Maximum Sliding Velocity | 0.5–2.0 m/s | Higher speeds require better lubrication |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
| pressure: | Up to 5000 psi |
| flow rate: | Dependent on pump design, typically 0-500 GPM |
| temperature: | -40°C to 150°C |
| slurry concentration: | Up to 60% solids by weight |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
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The crosshead converts the rotary motion of the crankshaft into linear motion for the plunger or piston, while absorbing side thrust forces to ensure straight-line movement.
Common materials include forged steel, ductile iron, and alloy steel, as listed in the directory.
Typical stroke length ranges from 50 to 300 mm, and plunger diameter from 20 to 150 mm, but these must be confirmed for the specific model.
Proper lubrication reduces friction and wear, preventing overheating and premature failure. The lubrication flow rate should be within the specified range (2–10 L/min) for the application.
This component is essential for the following industrial systems and equipment:
Commonly used trade names and technical identifiers for Crosshead.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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