Traveling Block & Hook Block Parts Guide for YC/DG Series

Core Purpose

We supply full-range, OEM-compatible replacement parts for traveling blocks and hook blocks, specifically tailored for YC series (YC225, YC315, YC450, YC585, YC675), DG series (DG225, DG315, DG450, DG675, DG350), and Lanzhou-specified models (Lanzhou Traveling Block YC, Lanzhou LS Hook DG350). Designed for oilfield drilling teams, heavy equipment maintenance technicians, industrial procurement specialists, and construction contractors, these parts resolve common issues like component wear, seal failure, and structural loosening, complying with API 8C (Drilling and Production Hoisting Equipment) and ISO 13854 standards to ensure hoisting safety, reduce unplanned downtime, and extend equipment service life.

Product Introduction

Our traveling block and hook block parts cover all critical components—including tension bars, hook bodies, sheaves, bearings, seals, fasteners, and lock assemblies—matching OEM dimensions and material specifications for seamless replacement. Each part undergoes strict quality control, adhering to API 8C load-bearing requirements and ISO 9001 manufacturing standards, to ensure compatibility with YC/DG series equipment and Lanzhou-specified models. We provide both standard parts (e.g., GB-standard bolts, washers, O-rings) and custom-machined components (e.g., YG-series locating parts, Lanzhou-specific housing assemblies) to meet diverse operational needs.

Function Description

These parts work synergistically to enable safe, efficient hoisting and load handling in drilling and heavy-lifting operations. Tension bars and support pins bear axial and radial loads, ensuring structural stability; hook bodies and lock assemblies secure loads to prevent slippage; sheaves and bearings reduce friction during rope movement, minimizing wear on hoisting cables; seals and dustproof oil seals prevent contamination from mud, water, and debris, protecting internal components; fasteners (bolts, nuts, cotter pins) maintain component alignment and tightness; and lubrication components (oil cups, grease fittings) ensure smooth operation of moving parts. Each part is engineered to function under high-load, high-vibration conditions, complying with API 8C safety margins for critical hoisting equipment.

Structural Features

1. High-strength construction: Load-bearing parts (e.g., hook rods, tension bars) are made of alloy steel with heat treatment, enhancing tensile strength and fatigue resistance to meet API 8C load requirements. 2. Sealed design: Multiple seal layers (O-rings, oil seals, dustproof caps) prevent debris intrusion, suitable for harsh outdoor and drilling environments. 3. Precision machining: Sheaves, bearings, and locating parts feature tight tolerances (±0.02mm) to ensure smooth movement and alignment, reducing vibration and uneven wear. 4. Universal compatibility: Standard fasteners (GB-series) and custom components are designed to fit both YC/DG series and Lanzhou-specified models, simplifying procurement and replacement. 5. Easy maintenance: Lubrication points (grease fittings, oil cups) are strategically placed for convenient maintenance, extending part service life.

Applicable Working Conditions

These parts are ideal for a wide range of harsh working environments, including: 1. Oilfield drilling sites (onshore and offshore), where equipment faces high loads, mud contamination, and extreme temperature fluctuations (-20℃ to 80℃). 2. Construction and mining operations, where heavy vibration and dust require durable, sealed components. 3. Industrial hoisting applications, where precise load handling and safety compliance are critical. 4. Lanzhou-specified equipment operations, matching the unique structural requirements of localized traveling blocks and hooks. All parts meet API 8C environmental resistance standards, ensuring reliability in corrosive, high-humidity, and high-dust conditions.

Maintenance & Care Recommendations

To maximize part service life and ensure operational safety, follow these maintenance guidelines: 1. Regular lubrication: Apply lithium-based grease to bearings, sheaves, and pivot points every 50 operating hours; inspect oil cups and grease fittings for clogs, replacing them if damaged. 2. Contamination control: Clean seals and dustproof components weekly, replacing O-rings and oil seals at the first sign of cracking or leakage (per API 8C inspection protocols). 3. Fastener inspection: Check bolts, nuts, and cotter pins for tightness every 100 operating hours; replace any worn or deformed fasteners with OEM-compatible parts to avoid structural failure. 4. Wear monitoring: Measure sheave grooves and hook bodies quarterly—replace parts if wear exceeds 0.5mm (API 8C wear limits). 5. Storage: Store spare parts in a dry, clean environment, away from moisture and corrosive substances; apply anti-corrosion spray to metal components for long-term storage.

Parts list for Traveling block and hook block Model YC315

Parts for Lanzhou Traveling block YC

Parts for Lanzhou LS HOOK DG350

Field Fault Maintenance Cases

Case 1: An oilfield reported hook slippage in a YC315 hook block. Inspection found worn YG160-22 locking blocks and stretched YG160-21 springs, failing to engage properly. Solution: Replaced locking blocks and springs with OEM-compatible parts, adjusted engagement clearance per API 8C specs. The issue was resolved, and load security was restored.

Case 2: A Lanzhou YC traveling block experienced excessive sheave vibration. Investigation revealed worn 2097938E bearings and misaligned sheave shafts (YG180-03). Solution: Replaced bearings, realigned the shaft, and lubricated with high-temperature grease. Vibration was eliminated, and sheave service life was extended by 70%.

Case 3: A DG350 LS hook had oil leakage from the barrel assembly. Root cause: Damaged D4-4-66 O-rings and worn 103.04.04 seal retainers. Solution: Replaced O-rings and seal retainers, cleaned the barrel interior, and applied sealant per OEM guidelines. Leakage stopped, and internal component corrosion was prevented.

Case 4: A YC225 traveling block had loose clevis pins (102.16.04) and missing GB91-86 cotter pins. This posed a safety risk per API 8C. Solution: Replaced cotter pins, retorqued clevis pins to specified torque, and added a weekly inspection checklist for fasteners. No further loosening issues occurred.

FAQ

Procurement Guide

We offer a comprehensive range of traveling block and hook block parts for YC/DG series and Lanzhou-specified models, all adhering to API 8C, ISO 13854, and ISO 9001 standards to ensure safety, compatibility, and durability. Our parts resolve common faults like wear, leakage, and structural loosening, minimizing downtime for your drilling and hoisting operations. Whether you need standard fasteners, critical load-bearing components, or custom Lanzhou-specific parts, we can fulfill your requirements. Contact us to confirm part specifications, get personalized maintenance advice, and complete your procurement—we prioritize quality, reliability, and professional support to keep your equipment running smoothly.