Product Introduction
This curated collection features genuine Braden OEM parts for main winch systems and NOV OEM parts for auxiliary/boom winch assemblies, covering hydraulic valves, brake components, sealing kits, bearings, clutches, and friction hardware. Unlike generic aftermarket alternatives, each part is forged from high-grade hardened steel, heat-treated friction materials, and oil-resistant elastomers, built to withstand 24/7 cyclic operation, extreme temperatures (-20°C to 85°C), and harsh drilling rig contaminants. These parts restore factory performance, extend service intervals by 35%, and eliminate safety risks associated with subpar replacement components.
Key Functional Benefits
- Stable Load Holding: High-flow brake valves, friction discs, and brake cylinders deliver instant, secure load locking, preventing drift during suspended lifting operations.
- Precision Hydraulic Control: Counterbalance valves, relief valves, and load shuttle valves maintain consistent pressure and flow, enabling smooth, controlled winching without jolting or speed fluctuations.
- Leak-Proof Sealing: OEM-grade seal kits, O-rings, and backup rings eliminate hydraulic fluid leaks, preserving system pressure and reducing fluid consumption.
- Durable Power Transfer: Sprag clutches, overrunning clutches, and precision bearings ensure reliable torque delivery, minimizing slippage and extending drivetrain life.
- Wear Resistance: Heavy-duty brake discs and friction discs handle high-heat braking cycles, reducing replacement frequency and maintenance downtime.
Structural & Engineering Features
All OEM winch parts adhere to strict industrial design standards with key advantages:
- Precision Cartridge Design: Drop-in hydraulic valve cartridges for fast installation, cutting repair labor time by up to 40%.
- High-Load Tolerance: Brake and clutch components rated for 150% of rated working load, resisting fatigue and deformation under heavy use.
- Corrosion Protection: Zinc-plated steel hardware and chemical-resistant seals to withstand rig dust, saltwater, and hydraulic fluid exposure.
- Interchangeable OEM Design: Direct replacement for worn components, no custom modifications required for Braden main winch and NOV auxiliary/boom winch assemblies.
Applicable Operating Conditions
These replacement parts are validated for the harshest winch operating environments:
- Industry Applications: Land drilling rigs, offshore platforms, heavy construction, crane operations, and industrial rigging
- Load Capacity: Medium to heavy-duty winching (10,000–50,000 lbs line pull)
- Operation Type: Continuous cyclic lifting, static load holding, and high-tension pulling
- Environmental Limits: Extreme temperature zones, high-vibration rig sites, and dust/contaminant-rich worksites
Proactive Maintenance Recommendations
- Scheduled Inspections: Inspect brake discs, friction pads, and hydraulic valves every 250 operating hours; check for leaks, wear, and heat damage.
- Seal & Valve Care: Replace seal kits and O-rings every 500 hours to prevent leaks; test relief and counterbalance valves quarterly for pressure accuracy.
- Clutch & Bearing Service: Lubricate bearings and clutches per OEM specifications; replace worn clutches at the first sign of slippage.
- Brake System Maintenance: Resurface or replace brake discs when thickness drops below OEM minimums; adjust brake clearance for optimal stopping power.
- Spare Parts Stocking: Keep high-failure items (seal kits, O-rings, friction discs, valve cartridges) on hand to minimize rig downtime during repairs.
We supply the following spare parts:
| ITEM | ITEM DESCRIPTION | MFG NAME | PART NO. | UOM |
| 1 | CARTRIDGE, COUNTERBALANCE VALVE(MAIN WINCH) | BRADEN | 104014 | EA |
| 2 | CARTRIDGE, SEAL KIT(MAIN WINCH) | BRADEN | 64666 | EA |
| 3 | CARTRIDGE, CHECK VALVE(MAIN WINCH) | BRADEN | 109114 | EA |
| 4 | CARTRIDGE, SEAL KIT(MAIN WINCH) | BRADEN | 64667 | EA |
| 5 | BRAKE VALVE ASSEMBLY – HIGH FLOW(MAIN WINCH) | BRADEN | 104433 | EA |
| 6 | NEEDLE VALVE(MAIN WINCH) | BRADEN | 103936 | EA |
| 8 | O-RING(MAIN WINCH) | BRADEN | 13542 | EA |
| 9 | O-RING(MAIN WINCH) | BRADEN | 10330 | EA |
| 10 | SEAL KIT (STANDARD HOIST) (MAIN WINCH) | BRADEN | 64266 | EA |
| 11 | OVER RUNNING CLUTCH , C-SHAFT O/W ( MAIN WINCH) | BRADEN | 82911 | EA |
| 12 | BRAKE CYLINDER ASSEMBLY ( MAIN WINCH) | BRADEN | 82918 | EA |
| 13 | FRICTION DISC ( MAIN WINCH) | BRADEN | 103167 | EA |
| 14 | BRAKE DISC ( MAIN WINCH) | BRADEN | 102954 | EA |
| 15 | BACK-UP RING ( MAIN WINCH) | BRADEN | 100033 | EA |
| 16 | O-RING(MAIN WINCH) | BRADEN | 24484 | EA |
| 17 | O-RING(MAIN WINCH) | BRADEN | 22685 | EA |
| 18 | BACK-UP RING ( MAIN WINCH) | BRADEN | 72123 | EA |
| 19 | RETAINING RING(MAIN WINCH) | BRADEN | 103110 | EA |
| 20 | SPRING STOP | BRADEN | 103150 | EA |
| 21 | RETAINING RING(MAIN WINCH) | BRADEN | 103154 | EA |
| 22 | RELIEF VALVE (MAIN WINCH) | BRADEN | 18062 | EA |
| 23 | SPRING ( MAIN WINCH) | BRADEN | 103151 | EA |
| 24 | BALL BEARING( MAIN WINCH) | BRADEN | 103104 | EA |
| 25 | RING, INTERNAL RETAINING( MAIN WINCH) | BRADEN | 28814 | EA |
| 26 | BEARING, ROLLER( MAIN WINCH) | BRADEN | 28815 | EA |
| 27 | RING, EXTERNAL RETAINING( MAIN WINCH) | BRADEN | 28813 | EA |
| 28 | SEAL (MAIN WINCH) | BRADEN | 28816 | EA |
| 29 | CARRIER SEAL( MAIN WINCH) | BRADEN | 28808 | EA |
| 30 | O-RING(MAIN WINCH) | BRADEN | 28973 | EA |
| 38 | RELIEF VALVE ( MAIN WINCH) | BRADEN | 107025 | EA |
| 39 | SEAL KIT FOR RELIEF VALVE (MAIN WINCH) | BRADEN | 64050 | EA |
| 40 | PRESSURE RED . VALVE | BRADEN | 107026 | EA |
| 41 | SEAL KIT FOR PRESSURE RED . VALVE (MAIN WINCH) | BRADEN | 64051 | EA |
| 42 | LOAD SHUTTLE VALVE ( MAIN WINCH) | BRADEN | 107027 | EA |
| 43 | SEAL KIT FOR LOAD SHUTTLE VALVE ( MAIN WINCH) | BRADEN | 64049 | EA |
| 44 | CHECK VALVE ( MAIN WINCH) | BRADEN | 107028 | EA |
| 45 | SEAL KIT FOR CHECK VALVE( MAIN WINCH) | BRADEN | 64048 | EA |
| 46 | SEAL KIT (AUX &BOOM WINCH) | NOV | 961361-01 | EA |
| 47 | SPRAG CLUTCH ASSEMBLY(AUX &BOOM WINCH) | NOV | 961274-58 | EA |
| 48 | COUNTER BALANCE VALVE(AUX &BOOM WINCH) | NOV | 961426-01 | EA |
| 49 | O-RING(AUX &BOOM WINCH) | NOV | 961191-37 | EA |
| 50 | O-RING(AUX &BOOM WINCH) | NOV | 961190-21 | EA |
| 51 | NEEDLE VALVE ( AUX & BOOM WINCH) | NOV | 961302-01 | EA |
| 52 | BRAKE CYLINDER( AUX & BOOM WINCH) | NOV | 961274-01 | EA |
| 53 | BRAKE PISTON PLATE ( AUX & BOOM WINCH) | NOV | 961274-03 | EA |
| 54 | O-RING ( AUX & BOOM WINCH) | NOV | 961274-23 | EA |
| 55 | BEARING ( AUX & BOOM WINCH) | NOV | 961274-26 | EA |
| 56 | BRAKE DISC ( AUX & BOOM WINCH) | NOV | 961274-27 | EA |
| 57 | FRICTION DISC( AUX & MAIN WINCH) | NOV | 961274-28 | EA |
| 58 | O-RING ( AUX & BOOM WINCH) | NOV | 961266-22 | EA |
| 59 | OIL – SEAL ( AUX & BOOM WINCH) | NOV | 961274-30 | EA |
| 60 | THRUST BEARING RACE (0.09 THICK ) ( AUX & BOOM WINCH) | NOV | 961304-07 | EA |
| 61 | THRUST BEARING ( AUX & BOOM WINCH) | NOV | 961304-08 | EA |
| 62 | THRUST BEARING RACE (0.06 THICK ) ( AUX & BOOM WINCH) | NOV | 961304-09 | EA |
| 63 | VALVE, DUAL PILOT | NOV | 880009 | EA |
Field Failure Repair Case Studies
Case 1: Main Winch Load Drift & Brake Failure
Issue: Braden main winch experienced uncontrolled load drift during suspended drilling operations, creating a critical safety hazard. Root Cause: Worn high-flow brake valve assembly (Part No. 104433) and degraded friction discs (Part No. 103167) reducing braking force. Solution: Installed OEM brake valve and replacement friction discs; recalibrated brake pressure settings. Outcome: Restored full load holding capability, eliminated drift, and resumed safe drilling operations within 2 hours.
Case 2: Hydraulic Leak & Pressure Loss
Issue: Severe hydraulic fluid leakage around the main winch valve manifold, causing pressure drops and slow winch operation. Root Cause: Deteriorated counterbalance valve seal kits (Part No. 64666/64667) and damaged O-rings (Part No. 13542). Solution: Replaced OEM seal kits and O-rings; pressure-tested the manifold and bled air from the system. Outcome: Eliminated leaks, restored full hydraulic pressure, and reduced fluid waste.
Case 3: Auxiliary Winch Clutch Slippage
Issue: NOV auxiliary winch exhibited clutch slippage under heavy load, preventing proper load lifting and positioning. Root Cause: Failed sprag clutch assembly (Part No. 961274-58) and worn thrust bearings (Part No. 961304-08). Solution: Fitted OEM sprag clutch and thrust bearings; adjusted clutch engagement settings. Outcome: Restored full torque transfer, eliminated slippage, and returned the winch to full operational capacity.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible with non-Braden/NOV winch models? | No, these parts are custom-designed for Braden main winches and NOV auxiliary/boom winches, with unique specs and dimensions that do not guarantee fitment on other winch brands. |
| How do I verify these are genuine OEM parts? | Genuine OEM parts feature engraved Braden/NOV part numbers, match official winch service manual specifications, and carry OEM pressure and material ratings for industrial winch use. |
| What is the recommended replacement interval for wearable winch parts? | Seal kits, O-rings, and friction discs: Replace every 500 operating hours; clutches, bearings, and valves: Replace every 1,500–2,000 hours or when performance issues occur. |
Procurement Guidance & Call to Action
Protect your Braden main winch and NOV auxiliary/boom winch uptime, operational safety, and long-term performance by sourcing only genuine OEM replacement parts from this official catalog. Generic aftermarket components often lead to fitment failures, premature wear, hydraulic malfunctions, and costly unplanned rig downtime — all avoidable by referencing the exact part numbers, quantities, and specifications listed for every critical winch component.
This document acts as your single trusted reference for both routine preventive maintenance and emergency breakdown repairs, streamlining procurement workflows, eliminating ordering errors, and ensuring consistent winch performance. Whether you are building a critical spare parts inventory for drilling rig operations, scheduling scheduled overhauls, or resolving unexpected winch faults, these genuine Braden and NOV parts deliver unmatched durability, perfect drop-in fitment, and industry-leading reliability for heavy-duty winching tasks.
