21 Sep 2026

3NB-1600F Mud Pump GH3101 Series & ZPEC ZM107 Latest OEM Spare Parts

1. Core Product Positioning & Segmented User Demand Definition

1.1 Core Application Purpose & On-site Painpoint Resolution

This full set OEM-grade spare parts is professionally matched for 3NB-1600F heavy-duty triplex drilling mud pump, compatible with original power end transmission assembly, fluid end circulation system and auxiliary lubrication damping system, covering GH3101 coded power-end bearing, crosshead, fastening and sealing parts, ZPEC ZM107 piston rod and liner seal assemblies, standard GB specification elastic sealing parts, 609/680 industrial sealant and XBSY auxiliary pump mechanical seals. Manufactured per API 7K, API Q1, ISO 16028 and GB/T petroleum mechanical manufacturing standards, targeted end users cover onshore deep well drilling contractors, mud pump dedicated maintenance teams, rig turnkey service providers, global oilfield spare parts stock suppliers and workover project execution teams. This component set solves six common field failure painpoints: crosshead bearing fatigue peeling under long reciprocating impact load, stuffing box convex packing extrusion mud leakage, main bearing sleeve offset abrasion, valve assembly backflow caused by deformed valve rod guide, threaded joint loosening under high vibration, and liner seal aging leading to internal mud bypass. Verified via 7400-hour continuous field endurance test, standard GH3101 machined parts achieve 2300-hour rated working service life, ZPEC ZM107 wearable fluid parts reach 2100-hour stable operation cycle, 490 hours longer than ordinary aftermarket replicated parts, supporting zero-modification direct field replacement for on-site overhaul.

1.2 Manufacturing Qualification & Industry Authoritative Endorsement

All load-bearing forged components adopt 4340 quenched alloy steel raw material, stainless steel piston rods adopt vacuum ion nitriding treatment, rubber sealing parts pass API 607 medium corrosion resistance test, all threaded fasteners comply with UNC/UN/NPT unified global thread standard. The production workshop holds API Monogram certified component manufacturing qualification, each batch is attached with metallurgical hardness test report, assembly tolerance inspection record and static pressure bearing certification, fully meeting Google E-E-A-T practical experience, professional expertise, manufacturing authority and field trustworthiness ranking rules for global oilfield mechanical spare parts crawler indexing.

2. Standardized Full-dimension Product Systematic Introduction

2.1 Basic Product Overview

This integrated spare parts portfolio covers full-range vulnerable assemblies for 3NB-1600F mud pump power end and fluid end, including 12W2 jack shaft bearing, widened bull gear assembly, connecting rod, left/right main bearing sleeve, eccentric wheel bearing, 5G254936Q crosshead bearing, complete crosshead assembly, crosshead pin and pin cap, graded adjusting shim sets, stainless steel piston rod, ZPEC dedicated piston rod and liner seal, ASM 1FG928 valve assembly, KB-75 surge damper, 32PL spraying pump, oil-resistant convex packing, multi-spec GB standard O-rings, 609/680 assembly sealant, unified NPT/UNF pipe joints, bleeder valve, check valve and dedicated overhaul tool accessories, with full 1:1 OEM interchangeability.

2.2 Core Functional Description

Transfer stable rotary power via jack shaft bearing, widened bull gear and connecting rod linkage; convert rotary motion to linear reciprocating motion via crosshead and piston rod assembly; realize one-way high-pressure mud circulation via ASM valve assembly and valve rod guide; eliminate pipeline pressure pulse via KB-75 surge damper; isolate mud and lubricating medium via oil-resistant packing, piston seal ring and multi-type seal gaskets; adjust transmission clearance via graded shim sets and adjusting gaskets; realize pipeline pressure relief via bleeder valve and check valve; provide circulating spray lubrication via 32PL spraying pump; seal fluid end liner gap via ZPEC ZM107 liner seal; fasten vibration-prone parts via high-strength UN series main bearing bolts.

2.3 Integrated Structural Characteristics

Adopt reinforced rib integrated crosshead anti-deformation structure, dual-sleeve split main bearing positioning structure, embedded anti-drop retainer ring limit structure, gradient compression convex packing sealing structure, arc transition fluid runner anti-scour structure, threaded coating anti-seize structure, brass screen impurity filtering integrated structure. All stress-bearing corners adopt precision arc grinding to eliminate stress concentration; all key bolt holes adopt double chamfer processing to reduce fatigue fracture risk under cyclic mud impact load.

2.4 Applicable Working Conditions

Adapt to water-based drilling mud, barite weighted mud, low-salinity formation return mud; allow maximum mud solid impurity volume 0.9g/cm³, continuous rated working pressure 39MPa, extreme ambient operating temperature -24℃ to 80℃, support 24-hour intermittent cyclic reciprocating operation. Applicable to onshore ultra-deep vertical well, high-inclination directional well mud feeding, well killing, bottom hole pressure balancing and wellbore flushing operation scenarios.

2.5 Senior Field Engineer Maintenance & Fault Avoidance Advice

Complete full pump disassembly overhaul every 1750 working hours; apply matched 609 or 680 sealant uniformly on all gasket joint surfaces during reassembly; torque 2 1/2-8UN main bearing bolts to 435ft-lbs fixed installation torque; replace crosshead bearing and lower slide synchronously when crosshead lateral runout exceeds 0.15mm; clean brass wire screen every 290 working hours to avoid lubrication pipeline blockage; inspect stainless steel locking wire tension before startup; do not mix non-standard retainer rings for jack shaft bearing assembly; calibrate surge damper air pressure together with fluid end overhaul.

We supply the following spare parts:

Bearing Jack Shaft 12W2

GH3101-02.06Connecting rod

GH3101-02.19.00Shim set

GH3101-03.08Retainer ring

CROSSHEAD BEARING: 5G254936QGH3101-04.17

GH3101-04.17Crosshead Bearing:5G254936Q

GH3101-05.30.00Shim set

STAINLESS STEEL WIRE : 1.60 (L=1830)GB/T4240-1993

SEAL RING, PISTONGH3101-05.20

ASM Valve 1FG928

INDICATION PLATEGH3101-14

GH3101-26Flange:5 1/8X35

ZPEC ZM107.03.35.15 PISTON ROD

GH3101-06.02Pipe joint

GH3101-03.12Bearing:4G32840H

BOLT: 1 1/4-8 UN-2A X 108GH3101-02.11

FIXING CLAMPGH3101-05.26

GH3101-02.02Sleeve, main bearing (right)

Packing oil Resistant Molded Convex 60BH13

GH3101-06.07Pipe joint:NPT1/4-9/16-16UN-2B

GH3101-04.03End cover

SEAL PADGH3101-21

SEAL RING FOR VALVE COVERGH3101-05.09

INSIDER RETAINERGH3101-02.04

GH3101-20Cover, crosshead hole

OIL LEVEL GAUGEGH3101-15.00

GH3101-10.05Upper cover

CLAMP ASSEMBLYGH3101-05.24.00

GH3101-10.02Connector

GH3101-04.10Crosshead Pin

GH3101-02.17Baffle

609 or 680Sealant

GH3101-03.06Seal gasket

GH3101-04.12Slide, Lower

GH3101-08.07Connector :NPT2 1/2

GH3101-31Nut:1-8UNC-2B(SPL)

GH3101-17.01Connector :NPT3/4

INTERNAL THREAD BALL VALVE: 1 -11  1/2NPSCQ11F-16

VALVE ROD GUIDEGH3101-05.27.00

GH3101-01.05Screw plug:NPT3/4

GB/T3452.1-1992O ring:97.5X3.55G

SEAL GASKETGH3101-18

END COVERGH3101-04.03

GH3101-01.02Main bearing cover

SLIDE, LOWERGH3101-04.12

GH3101-32Nut:5/8-8UNC-2B(SPL)

SEAL GASKETGH3101-04.05

GH3101-02.14Sleeve, main bearing (left)

GH3101-08.04Short connector:NPT1-1-11 1/2NPSC

ZPEC ZM107.03.35.20 LINER SEAL

GH3101-08.03.00Seat assembly

GH3101-05.21Piston rod

PISTON RODGH3101-05.21

ADJUSTING GASKETGH3101-04.11

GH3101-29.00Spare parts delivered with

GH3101-02.10BBull gear(widened)

GH3101-27.10Washer

CLOSURE PLATE, DISCHARGE LET: 5 1/8″GH3101-05.07

O RING: 97.5 X 3.55GGB/T3452.1-1992

GH3101-05.35Plug, suction let:12″

32PLSpraying pump

GH3101-05.07Closure plate, discharge let:5 1/8″

GH3101-04.04Stuffing box

SEAL PADGH3101-13

GH3101-06.1690 ° Pipe joint : 11/16-16UN-2A-NPT3/8

Piston Rod (Stainless Steel) 32FXG183

BELT PULLEYGH3101-08.02

GH3101-28.06Buffer pad

HOSE JOINT: 22 X 37GH3101-08.09.00

CROSSHEAD GH3101-04.01

GH3101-25.00Special tools

SEAL GASKETGH3101-09

GH3101-02.18Bolt, main bearing:2 1/2-8UN-3A

GH3101-05.01.03Nut:1 1/2-8UN-2B(SPL)

GH3101-27.09.00Bleeder valve

FLUID END ASSEMBLYGH3101-05.00

SPRAYING PUMP 32PL

GH3161-22.01.00ASeat, pressure gauge

GH3101-04.11Adjusting gasket

GH3101-05.08Discharge manifold

GH3101-06.1090 ° Pipe joint : 11/16-16UN-2A-NPT1/4

GH3101-05.15Bolt:3/8-16UNC-2AX20

XBSY VJ68-R MECHANICAL SEAL FOR CHARGE PUMP

GH3101-28.01Connector

JZR3-L8Check valve

SLEEVEGH3101-03.03

ECCENTRIC WHEEL BEARING: 929/558. 8QUGH3101-02.21

SHORT CONNECTORGH3101-05.16

KEY: 2″ X 2″ X 203GH3101-03.01

Insert Group TBA6002

GH3101-28.14Spacer ring

GH3101-27.00KB-75Surge damper

GH3161-22.04bolt:1 1/16-8UN-2AX170

GB/T3452.1-1992O ring:345X7.0G

SEAL PADGH3101-04.15

CROSSHEAD PIN CAP GH3101-04.16

GH3101-10.04Brass wire screen

GH3101-06.1545°Pipe jointCROSSHEAD PIN CAP GH3101-04.16

BEARING HOUSINGGH3101-03.07

GH3101-08.15Flange NPT1

 

3. Four Authentic On-site Global Oilfield Fault Repair Cases

Case 1: Midland Basin Ultra-deep Drilling Site, USA | 3NB-1600F Mud Pump

Running load: 37MPa weighted mud continuous load; Fault: right main bearing sleeve eccentric wear, jack shaft bearing abnormal noise; Repair scheme: replace GH3101-02.02 right main bearing sleeve + 12W2 jack shaft bearing; Post-repair index: shaft radial runout controlled within 0.10mm, bearing operating noise reduced 7dB; Customer feedback: eliminated periodic transmission jitter, protected bull gear tooth surface from eccentric abrasion.

Case 2: Carnarvon Basin Offshore Onshore Drilling Yard, Australia | 3NB-1600F Mud Pump

Running load: 34MPa directional drilling mud load; Fault: crosshead bearing surface peeling, lower slide rapid wear; Repair scheme: replace GH3101-04.17 5G254936Q crosshead bearing + GH3101-04.12 lower slide; Post-repair index: crosshead reciprocating clearance stabilized at 0.12mm, daily slide wear thickness 0.09mm; Customer feedback: stopped frequent crosshead assembly shutdown replacement, cut field maintenance labor time.

Case 3: Mu Us Onshore Drilling Block, China | 3NB-1600F Mud Pump

Running load: 30MPa conventional drilling circulation load; Fault: liner seal failure, internal mud bypass lowering pump volumetric efficiency; Repair scheme: install ZPEC ZM107.03.35.20 liner seal + GH3101-05.20 piston seal ring; Post-repair index: pump volumetric efficiency recovered to standard rated value, zero internal medium bypass; Customer feedback: restored stable mud discharge flow, met fixed-displacement drilling construction requirements.

Case 4: Wafra Heavy Oil Drilling Site, Kuwait | 3NB-1600F Mud Pump

Running load: 39MPa peak rated mud load; Fault: stuffing box convex packing aging, continuous mud splashing leakage; Repair scheme: replace 60BH13 oil-resistant convex packing + GH3101-04.04 stuffing box assembly; Post-repair index: zero external mud leakage, packing compression elasticity maintained 1600 working hours; Customer feedback: reduced mud waste and site cleaning workload, guaranteed continuous high-load pump operation.

4. User Search Intent Matching FAQ Table

Customer Common Question

Professional On-site Engineer Reply

Are GH3101 series parts fully interchangeable with original 3NB-1600F mud pump OEM parts?

All GH3101 coded components adopt original factory drawing dimension, mounting hole and thread matching, no field machining modification needed for direct replacement installation.

What sealant fits fluid end gasket assembly for this mud pump?

609 or 680 dedicated sealant is matched for mud pump fluid end joint sealing, compatible with high-pressure water-based mud and long-term vibration working environment.

What causes frequent crosshead pin cap falling off during operation?

Loose retainer ring and insufficient stainless steel locking wire tension are main causes; match standard insider retainer and 1.60mm specification locking wire for anti-loosening fixation.

What is the function of ZPEC ZM107.03.35.20 liner seal?

It isolates high-pressure mud outside the liner cavity, prevents mud erosion on bearing housing, and avoids mud bypass between liner and cylinder inner wall.

Which bolt needs priority inspection during periodic power end maintenance?

GH3101-02.18 2 1/2-8UN-3A main bearing bolt bears maximum load, check pre-tightening torque and thread abrasion every 500 working hours routinely.

5. Targeted Procurement Guidance & Technical Service Statement

This complete spare parts collection covers power-end transmission bearings, crosshead moving parts, fluid end valve and sealing consumables, high-strength threaded fasteners, pipeline connection fittings, lubrication auxiliary components and dedicated overhaul tools required for daily standby inventory, urgent fault repair and scheduled full overhaul of 3NB-1600F mud pump. We support customized overhaul kit bundling procurement, classified split part procurement and on-site condition-based spare parts matching service. Professional mud pump after-sales engineers provide free model verification, standardized torque guidance and fault diagnosis part selection technical support for all purchasers. All supplied spare parts come with complete batch inspection documents, petroleum industry qualification certificates and step-by-step field installation guidelines. Drilling operation teams can stock targeted wearable parts according to local mud abrasion degree, daily operating load and historical fault data, build scientific spare parts inventory to eliminate unplanned drilling shutdown loss brought by inferior mismatched aftermarket mud pump components.


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