Frac Pump Plunger Clamp
Product Overview
The Frac Pump Plunger Clamp secures the plunger assembly to the crosshead extension in high-pressure reciprocating pumps. Engineered for cyclic high-load oilfield environments, it withstands severe shock loads and continuous high-frequency reciprocation during hydraulic fracturing operations. Designed to match OEM fluid end configurations, this clamp ensures rigid alignment, prevents plunger runout, and reduces premature packing wear.
Key Features
High Fatigue Resistance: Drop-forged alloy steel construction with optimized grain flow minimizes stress concentration under cyclic tension and compression.
Precision Locking Mechanism: Machined mating faces and robust fastening threads deliver uniform clamping force, preventing joint separation during high-pressure cycles (up to 15,000 psi operations).
Simplified Maintenance: Split-design geometry allows rapid installation and removal during routine field service, minimizing rig downtime.
Corrosion Protection: Manganese phosphate coating or specialized anti-corrosion plating resists hostile wellbore chemicals and atmospheric oxidation.
Technical Specifications
|
Parameter |
Specification Details |
|
Compatible Pump Models |
SPM QWS, Gardner Denver, Wepec, and equivalent triplex/quintuplex reciprocating frac pumps |
|
Body Material |
ASTM A514 / AISI 4340 forged alloy steel (custom stainless options available) |
|
Surface Hardness |
28 – 36 HRC (controlled via through-hardening heat treatment) |
|
Operating Pressure |
Up to 15,000 PSI fluid end compatibility |
|
Connection Type |
Bolt-secured split clamp / Quick-release pin configurations |
|
Dimensional Tolerance |
CNC machined to ± 0.02 mm critical interface tolerances |
Applications
Primary Oilfield Services
High-pressure hydraulic fracturing, well stimulation, and abrasive fluid pumping.
Rig Equipment Integration
Compatible with truck-mounted and skid-mounted quintuplex and triplex frac units.
Aftermarket Overhaul
Direct replacement component for routine fluid end maintenance and scheduled servicing.
Materials & Configuration
Forging & Metallurgy: Produced from closed-die forged billets to eliminate internal casting voids, shrinkage, and inclusions.
Heat Treatment: Quenched and tempered in automated thermal-processing lines to achieve optimal tensile strength and impact toughness.
Standard Configuration: Includes clamp halves, high-tensile socket head cap screws (Grade 12.9), and alignment dowels.
Custom Options: Custom bore diameters, specialized corrosion-resistant coatings for offshore or sour gas (H₂S) environments.
Quality Control & Manufacturing
In-House Forging & Machining
Vertical integration from raw material testing to final CNC turning ensures strict dimensional repeatability.
Non-Destructive Testing (NDT)
100% magnetic particle inspection (MPI) performed on critical stress zones to detect surface and subsurface defects.
Dimensional Verification
Coordinate Measuring Machines (CMM) inspect bolt hole spacing, clamp radius, and mating widths against engineering drawings.
Traceability
Heat lot numbers and material test reports (MTR per EN 10204 3.1) are stamped on every unit.
Customization & OEM Replacement
Reverse Engineering: Custom clamps fabricated from worn sample parts or physical blueprints for obsolete or non-standard pump models.
Interface Adaptation: Custom thread pitches, clearance pockets, and pin placements tailored to specific power-end-to-fluid-end conversion kits.
Private Labeling: Laser-etched part numbers, company logos, and custom serialization upon request.
Packaging & Shipping
Corrosion Prevention: Slathered with industrial-grade rust inhibitor and wrapped in VCI (Volatile Corrosion Inhibitor) poly bags.
Packaging: Export-grade wooden crates or heavy-duty corrugated cartons secured with steel banding to prevent transit damage.
Logistics Support: Ex Works, FOB, CIF, or DDP shipping terms available via air, ocean, or express freight from manufacturing hubs.
Frequently Asked Questions
Q: Are these clamps interchangeable with OEM SPM parts?
A: Yes. They are reverse-engineered and dimensionally matched to fit standard OEM plunger assemblies and crosshead connections without modification.
Q: What material grades are standard for high-pressure service?
A: Standard production utilizes AISI 4340 forged alloy steel, heat-treated to 28–36 HRC for balanced tensile strength and impact resistance.
Q: What NDT documentation is provided with shipments?
A: Each batch includes Material Test Reports (MTR) and magnetic particle inspection (MPI) compliance certificates.
Q: How do I select the correct clamp model for my pump?
A: Provide the pump brand, model series (e.g., SPM 2250), plunger diameter, and existing OEM part number for verification.
Q: What is the standard lead time for bulk orders?
A: Standard catalog items ship within 2 to 3 weeks. Custom manufactured configurations require 4 to 6 weeks depending on forging availability.
Q: Do you supply replacement fasteners with the clamps?
A: Yes. Every clamp assembly ships complete with matching high-tensile Grade 12.9 socket head cap screws.
Request a Quote
To receive an accurate quotation within 24 hours, please provide the following technical details:
Pump Brand & Model: (e.g., Gardner Denver, SPM QWS)
Part Number / Reference: (OEM part number if available)
Plunger Diameter: (in inches or millimeters)
Required Quantity: (Trial orders and bulk volume schedules accepted)
Target Delivery Terms: (FOB, CIF, or DDP destination port/zip code)
Special Requirements: (Custom coatings, specific MTR documentation, or private labeling)
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