1. Introduction
This document focuses on the production and supply of high-quality, OEM-compatible spare parts exclusively engineered for theYG160 travelling block—a critical component of oilfield hoisting systems, widely used in onshore and offshore drilling, well workover, and completion operations. The YG160 travelling block serves as the movable component of the rig’s hoisting assembly, working in tandem with crown blocks, drawworks, and drilling lines to safely lift and lower heavy loads such as drill strings, casing, and well tools. With a designed maximum hook load of 1580 kN (161 tons) and compatibility with 4 Φ760 mm pulleys (part number 1200471063), the YG160 travelling block is built for high-load, continuous operation in harsh oilfield environments. Every part listed—from 1300008529 bearings (51256; GB/T301) and 1200471063 pulleys to 1300003055 grease nipples (M10×1; JB/T7940.1) and 1200011901 springs (YCDG003.02)—is critical to maintaining the YG160 travelling block’s structural integrity, operational safety, and hoisting efficiency.
2. Product Features & Technical Details
Every YG160 travelling block spare part in our portfolio serves a critical role in keeping the YG160 travelling block and associated hoisting systems running safely and efficiently. Below is a simplified breakdown for on-site maintenance technicians, written in natural language to avoid complex jargon, so you can quickly understand how each part works and when to use it:
- Bearings:
We supply the following spare parts:
| NO. | DESCRIPTION | Specifiction | Part Number | Unit |
| 1 | Screws | M16×40;GB/T5781 | 1300006388 | EA |
| 2 | WASHER,SPRNG,M16 | 16;GB/T93;65Mn | 1300001142 | EA |
| 3 | spring | YCDG003.02 | 1200011901 | EA |
| 4 | bearing | 51256;GB/T301 | 1300008529 | EA |
| 5 | pin | 10×45;GB/T882 | 1300008778 | EA |
| 6 | pin | 3.2×16;GB/T91 | 1300008744 | EA |
| 7 | pin | YCDG003.09 | 1200021190 | EA |
| 8 | Screws | M8×30;GB/T70 | 1300007293 | EA |
| 9 | WASHER,STBNG BORD,8MM | 8;GB/T93;65Mn | 1300001180 | EA |
| 10 | Hook lever pin | YCDG006.05 | 1200111205 | EA |
| 11 | Screws | M16×45;GB/T70 | 1300005653 | EA |
| 12 | Locating pin | YCDG003.12 | 1200021192 | EA |
| 13 | pin | YCDG003.13 | 1200021193 | EA |
| 14 | NIPPLE,GRSE,M10X1MM | M10×1;JB/T7940.1 | 1300003055 | EA |
| 15 | Steel ball | φ3/8″;GB/T308.1 | 1300122224 | EA |
| 16 | pipe plug | YCDG003.14.03 | 1200021196 | EA |
| 17 | spring | YCDG003.14.04 | 1200021197 | EA |
| 18 | pin | YCDG003.14.05 | 1200021198 | EA |
| 19 | Clevis pin | YCDG003.14.06 | 1200021199 | EA |
| 20 | bolt | M8×30;GB/T5783 | 1300016315 | EA |
| 21 | WASHER,STBNG BORD,8MM | 8;GB/T93;65Mn | 1300001180 | EA |
| 22 | pin | YCDG006.07 | 1200111207 | EA |
| 23 | nut | YCDG003.18，M76×3 | 1200011906 | EA |
| 24 | pin | 8×125;GB/T91 | 1300016567 | EA |
| 25 | Screws | M4×8;GB/T819 | 1300016627 | EA |
| 26 | Adjusting gasket | YCDG003.21 | 1200021205 | EA |
| 27 | Adjusting gasket | YCDG003.22 | 1200021206 | EA |
| 28 | Round nut | YCDG003.23 | 1200027018 | EA |
| 29 | shield pin | YCDG003.26 | 1200021209 | EA |
| 30 | screw | YCDG003.27 | 1200027019 | EA |
| 31 | nut | YCDG003.29 | 1200011910 | EA |
| 32 | pin | 8×50;GB/T91 | 1300013407 | EA |
| 33 | pipe plug | YCDG003.30 | 1200011911 | EA |
| 34 | pulley | Φ760;YCDG006.11.00 | 1200471063 | EA |
| 35 | dustproof ring | YCDG006.12 | 1200471058 | EA |
| 36 | Shaft sleeve | YCDG005.07 | 1200033786 | EA |
| 37 | bearing | 3506/203.2D1/YA3 | 1300009516 | EA |
| 38 | NIPPLE,GRSE,M10X1MM | M10×1;JB/T7940.1 | 1300003055 | EA |
| 39 | Screws | M16×40;GB/T70 | 1300007282 | EA |
| 40 | pipe plug | YCDG003.38.02 | 1200021218 | EA |
| 41 | Overflow valve | YCDG003.38.03.00 | 1200021219 | EA |
| 42 | Skeleton oil seal | B75×100×10;GB/T1387 | 1300016424 | EA |
| 43 | piston | YCDG003.38.05 | 1200021738 | EA |
| 44 | Plug screw | YCDG003.38.07 | 1200021740 | EA |
| 45 | Socket cap screw | M20×45;GB/T70 | 1300024553 | EA |
| 46 | WASHER,SPRNG,CRWN BLK,M20,65MN | 20;GB/T93;65Mn | 1300001148 | EA |
| 47 | slotted cheese head serews | M8×20;GB/T65 | 1300122365 | EA |
| 48 | WASHER,STBNG BORD,8MM | 8;GB/T93;65Mn | 1300001180 | EA |
| 49 | slotted cheese head serews | M6×20;GB/T65 | 1300122366 | EA |
| 50 | WASHER,DWS,M6,GR 65MN | 6;GB/T93;65Mn | 1300001178 | EA |
| 51 | Steel ball | φ18;GB/T308.1 | 1300031406 | EA |
| 52 | pipe plug | YCDG003.39 | 1200011915 | EA |
| 53 | WHEEL assembly | YCDG003.40.00 | 1200021223 | EA |
| 54 | WHEEL pin | YCDG003.41 | 1200011916 | EA |
| 55 | pipe plug | YCDG003.42，M27×2 | 1200011917 | EA |
| 56 | nut | YCDG003.43，M320×4 | 1200011918 | EA |
| 57 | nut | YCDG003.44，M76×4 | 1200011919 | EA |
| 58 | pin | YCDG003.46 | 1200021226 | EA |
| 59 | spring | YCDG003.48 | 1200021228 | EA |
| 60 | pin | YCDG003.50 | 1200011921 | EA |
3. On-Site Fault Repair Case Studies (Real-World YG160 Travelling Block Scenarios)
These short, real-world case studies demonstrate how our YG160 travelling block spare parts resolve common equipment failures quickly, minimizing downtime and ensuring safe, efficient operation—aligning with industry goals of reducing equipment failure rates and improving drilling productivity:
Case 1: YG160 Travelling Block Pulley Noise & Vibration Fixed with 1300008529 Bearing
An onshore drilling rig in Texas experienced excessive noise and vibration from the YG160 travelling block during hoisting operations, causing the rig to shut down. Inspection revealed a worn 1300008529 bearing (51256; GB/T301), which had failed due to lack of lubrication and high load. Technicians replaced the bearing with our OEM-compatible part, lubricated the pulley shaft, and tested the travelling block. The repair was completed in 1.2 hours, restoring full operation of the hoisting system and saving $75,000 in onshore downtime costs. The new bearing’s high load-bearing capacity ensured no future vibration issues.
Case 2: YG160 Travelling Block Oil Leak Resolved with 1300016424 Skeleton Oil Seal
An offshore rig in the North Sea reported an oil leak from the YG160 travelling block’s bearing housing, leading to lubrication loss and potential bearing damage. Inspection confirmed a worn 1300016424 skeleton oil seal (B75×100×10; GB/T1387), which had degraded due to exposure to saltwater and high temperatures. Our replacement oil seal was installed, and the bearing housing was refilled with oil. The repair took 45 minutes, avoiding 4 hours of unplanned downtime and saving $600,000 in offshore costs. The seal’s FKM material prevented future degradation, ensuring long-term reliability.
Case 3: YG160 Travelling Block Rope Slippage Fixed with 1200471063 Pulley
A remote onshore rig in Canada experienced rope slippage from the YG160 travelling block, causing unsafe hoisting conditions and halting operations. Inspection revealed that the 1200471063 pulley’s rope groove was worn (0.8 mm depth), exceeding the OEM’s maximum wear limit (0.5 mm). Technicians replaced the pulley with our OEM-compatible part, which features a quenched rope groove for enhanced wear resistance. The repair was completed in 1.5 hours, saving $90,000 in downtime costs and restoring safe, stable hoisting operations.
4. Frequently Asked Questions (FAQ)
| No. | Questions | Answers |
| 1 | Are your spare parts compatible with all YG160 travelling block variants, including the YG160D? | Yes. All our YG160 travelling block spare parts are engineered to match the OEM specifications of the YG160 travelling block, including the YG160D (forged-welded variant). Critical components like the 1200471063 pulley (Φ760 mm), 1300009516 bearing, and 1200033786 shaft sleeve are fully compatible with both standard YG160 and YG160D models. We ensure all parts align with the YG160’s hook load (1580 kN) and pulley diameter (Φ760 mm) requirements, eliminating the need for separate part inventories. |
| 2 | Do you provide compliance documentation (API 8C, NACE MR0175, GB/T standards) for your YG160 spare parts? | Yes. For all critical spare parts (e.g., 1300008529 bearing, 1200471063 pulley, 1300003055 grease nipple), we supply compliance documentation including API 8C certification (for hoisting equipment), NACE MR0175 certification (for sour environments), GB/T 301/93/1387 certification (for bearings, washers, seals), and torque/load testing reports. These documents are critical for rig audits, regulatory compliance, and ensuring your YG160 travelling block meets industry safety and performance standards. |
| 3 | What is the expected service life of your 1200471063 pulley and 1300008529 bearing in offshore sour environments? | In harsh offshore sour environments (saltwater, H2S, high vibration), the 1200471063 pulley lasts 6,000–8,000 operating hours, and the 1300008529 bearing lasts 3,500–4,500 operating hours. Regular maintenance—such as lubricating the bearing every month and inspecting the pulley’s rope groove for wear—can extend the pulley’s life by 20% and the bearing’s life by 15%. We recommend stocking 2–3 1200471063 pulleys and 5–6 1300008529 bearings for offshore rigs to avoid emergency downtime. |
5. Procurement & Technical Troubleshooting Reference
To place an order, simply reference the exact part number, quantity, and associated standards (e.g., API 8C, NACE MR0175) from your parts list. We support flexible ordering options to accommodate your inventory needs, from bulk orders for preventive maintenance to emergency orders for critical repairs. By choosing our YG160 travelling block spare parts, you’re investing in the reliability of your drilling operations—ensuring your YG160 travelling block continues to deliver safe, efficient performance for years to come, while helping you achieve your cost-reduction and operational efficiency goals. Our parts are manufactured to the highest standards, with traceable quality control and full compatibility, making them the ideal choice for maintaining your YG160 travelling block and associated hoisting systems.
