KP - Clamp Pony Rod to Piston Rod
This is the clamp that joins the pony rod to the piston rod in the reciprocating drive train of a piston pump, holding the two rods in line so the crosshead motion is transmitted cleanly into each pumping stroke. It is an aftermarket replacement for Kerr KP-280 and fits the JT40, KP-3300PT and T30M pumps. Unit weight is about 3 lb.
What it is
A piston rod connects the crosshead in the power end to the piston in the fluid end, transmitting the reciprocating motion that drives each pumping stroke.
Pump compatibility
- JT40
- KP-3300PT
- T30M
Specifications
| Property | Value |
|---|---|
| Weight | 3.00 lb (≈ 1.36 kg, converted) |
| Width | （无） |
| Height | （无） |
| Depth | （无） |
Manufacturer technical notes
Pony Rod to Piston Rod Clamp for Kerr Pumps (SKU:KP-280), forged from 42CrMo alloy steel (tensile strength ≥1080MPa) with quenching & tempering (HRC30-35), phosphated surface (salt spray tested ≥1000hrs corrosion-free), API 7K compliant, compatible with Kerr KA-3500PT/Q5450PT, installation torque 280-300Nm.
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing Kerr KP-280.
FAQ
- Which pumps does this pony-rod-to-piston-rod clamp fit?
- It is listed to fit the JT40, KP-3300PT and T30M piston pumps.
- What does this clamp do in the pump?
- It couples the pony rod (the intermediate rod that passes through the oil-seal housing between power end and fluid end) to the piston rod, keeping them aligned as the assembly reciprocates.
- What reference part number does it replace?
- It is an aftermarket replacement for Kerr part KP-280; the brand and number are given for identification only and do not imply OEM manufacture.
Related parts
All brand names, model numbers and part numbers are used for identification and cross-reference only and do not imply original-equipment manufacture. This is an aftermarket replacement part.
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