Pony Rod Tapered Jam Nut Clamp Type
This is a tapered jam nut, clamp type, for the pony rod. It secures and retains the pony rod connection against loosening under the pump's reciprocating loads, using a tapered clamp arrangement. It is an aftermarket replacement part for Kerr part number KA-275T, supplied to fit the KA-3500PT, T50 and T50-PT models. It weighs about 5.00 lb.
What it is
A pony rod (intermediate rod) extends between the crosshead and the piston or plunger rod, passing through the oil-seal housing that separates power end from fluid end.
Pump compatibility
- KA-3500PT
- T50
- T50-PT
Specifications
| Property | Value |
|---|---|
| Weight | 5.00 lb (≈ 2.27 kg, converted) |
| Width | (Not listed) |
| Height | (Not listed) |
| Depth | (Not listed) |
Manufacturer technical notes
Pony Rod Tapered Jam Nut Clamp Type KA-275T (API 7K Certified), forged from ASTM A29/A29M 42CrMo alloy steel, quenched and tempered to core hardness 248-302 HBW, surface nitrided to ≥850 HV, pressure differential resistance ≥40MPa, compatible with F1300/F1600 mud pumps, tensile strength ≥1080MPa.
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing Kerr KA-275T.
FAQ
- Which pumps does this jam nut fit?
- It is configured to fit the KA-3500PT, T50 and T50-PT models.
- What does this part do?
- It is a tapered, clamp-type jam nut that secures and retains the pony rod connection against loosening under the pump's reciprocating loads.
- What is the cross-reference part number?
- This is an aftermarket replacement part that cross-references to Kerr part number KA-275T. The brand and number are for identification only and do not indicate 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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