KT - LINER 4" CHROME
This is a 4" chrome cylinder liner, the replaceable bore in which the piston reciprocates inside the pump fluid end. It is a primary wear surface matched to the pump's bore size, supplied as an aftermarket replacement for Kerr KT-285-400CH. It fits the JT7020, KT-3350PT, KT-3400PT, T-35 and T-40 pumps and weighs about 7 lb.
What it is
This is a replacement part for the listed reciprocating pump models, supplied to match the original component's form and fit.
Pump compatibility
Specifications
| Property | Value |
|---|---|
| Weight | 7.00 lb (≈ 3.18 kg, converted) |
| Width | （无） |
| Height | （无） |
| Depth | （无） |
Manufacturer technical notes
KT-LINER 4" CHROME (SKU: KT-285-400CH) API 7K-certified 35CrMo alloy steel (tensile strength ≥900MPa) with quenching+tempering (hardness HRC50-55), hard chrome-plated surface (salt spray test ≥1000h corrosion-free), compatible with Kerr KT-3350PT mud pumps, pressure differential resistance ≥40MPa, dynamic load longevity ≥10⁷ cycles for high-pressure sealing reliability
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing Kerr KT-285-400CH.
FAQ
- Which pumps does this 4" chrome liner fit?
- It is listed to fit the JT7020, KT-3350PT, KT-3400PT, T-35 and T-40 pumps.
- What is the liner's role in the pump?
- It provides the 4" replaceable bore in which the piston reciprocates; as a main wear surface in the fluid end it is a routine service item.
- What reference part number does it replace?
- It is an aftermarket replacement for Kerr part KT-285-400CH; the brand and number are 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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