Product Description
This comprehensive collection features direct-fit OEM replacement parts for routine preventive maintenance, partial repairs, and full overhauls of the JC70D drawworks, covering drive shafts, gear rings, sprockets, bearing assemblies, sealing components, clutch systems, brake calipers and pads, pneumatic control valves, and specialized fasteners. Unlike generic aftermarket alternatives, each component is built to the original JC70D drawworks design specifications, material grades, and dimensional tolerances, ensuring seamless installation, zero compatibility errors, and reliable performance under the harsh conditions of 24/7 drilling hoisting operations. The lineup is curated to cover all high-wear, high-failure-rate drawworks parts needed to keep lifting operations running smoothly and safely.
Functional Specifications
- Drive & Gear Components: Precision-machined shafts (106-series), internal/external gear rings, and toothed sprockets deliver smooth power transmission for hoisting operations; hardened gear surfaces resist wear and maintain meshing accuracy under heavy loads.
- Bearing & Support Parts: Heavy-duty NSK and GB-standard bearings (22236CDE4, 32144) support rotating shafts and reduce friction; bearing boxes and covers protect internal components from dust, drilling mud, and physical damage.
- Clutch & Brake Systems: Complete clutch assemblies, shift rings, and DBS75-series brake calipers/pads enable reliable engagement, disengagement, and emergency stopping; friction discs and brake blocks provide consistent braking torque to prevent slippage.
- Sealing & Lubrication Parts: Oil seal rings, O-rings, and retainer rings prevent lubricant leakage and block abrasive contaminants; pneumatic valves and filters regulate air pressure for clutch and brake actuation.
- Fastening & Alignment Components: High-strength GB-standard bolts, nuts, and square keys secure critical assemblies; spacers and thrust rings maintain proper shaft alignment and prevent axial movement during operation.
Structural Characteristics
All JC70D drawworks spare parts feature rugged, drilling-grade construction for maximum durability: gear and shaft components use forged, heat-treated alloy steel to resist bending, fatigue, and wear; sealing elements use oil-resistant, temperature-stable rubber compounds to maintain leak-proof performance; bearings use precision-ground races for low-friction rotation; brake components use high-friction, heat-resistant materials to withstand repeated stopping cycles. Components are designed for tool-friendly field installation, minimizing repair time during critical drilling lifting windows and reducing labor costs for remote rig maintenance.
Applicable Operating Conditions
These spare parts are engineered to perform reliably in the extreme conditions of JC70D drawworks operation, including:
- 24/7 continuous heavy hoisting loads for drilling rig lifting and pipe handling
- Exposure to abrasive drilling mud, dust, and high-humidity remote drilling environments
- Extreme cyclic vibration and mechanical stress from repeated hoisting and braking
- Ambient temperatures ranging from -25°C (-13°F) to 65°C (149°F) across diverse drilling sites
- Compliance with API 8C and GB drilling equipment standards for safe hoisting operations
Maintenance & Servicing Recommendations
- Pre-Installation Verification: Cross-reference OEM part numbers against JC70D drawworks technical manuals to confirm exact fit; inspect parts for manufacturing defects and clean all mating surfaces to remove grease, mud, and debris before assembly.
- Sealing & Lubrication Care: Replace oil seals and O-rings every 2,500 operating hours; lubricate bearings and gear assemblies with approved drawworks oil during installation to prevent premature wear; check for leaks immediately after startup and retorque covers as needed.
- Wear Component Replacement: Inspect gears, sprockets, and brake pads for wear and scoring every 2,000 hours; replace worn clutch discs and brake blocks promptly to maintain hoisting and braking performance.
- Fastener & Alignment Checks: Re-torque all shaft bolts, bearing box fasteners, and clutch hardware to OEM specifications every 1,500 hours; replace damaged keys and spacers to preserve shaft alignment.
- Pneumatic System Maintenance: Clean air filters and test control valves quarterly; replace faulty pressure relay and quick-release valves immediately to ensure reliable clutch/brake actuation.
We supply the following spare parts:
| 157 | SHAFT | 106.06.36.02 |
| 158 | O-RING 195X8.6 | D4-4-66 |
| 159 | THRUST RING | 106.06.36.04 |
| 160 | SPACER | 106.06.36.07 |
| 161 | OIL SEAL RING | 106.16.36.04 |
| 162 | INTERNAL GEAR RING | 106.16.36.05 |
| 163 | EXTERNAL GEAR RING | 106.06.36.09 |
| 164 | FLANGE | 106.06.37.01 |
| 165 | SPROCKET 61T. P=12.7 | 106.06.37.02 |
| 166 | SQ. KEY A32X160 | C7-4-95 |
| 167 | SPACER L=132 | 106.06.37.03 |
| 168 | BEARING BOX COVER LEFT | 106.06.37.04 |
| 169 | BEARING BOX COVER | 106.59.32.01 |
| 170 | SPACER L=97 | 106.06.37.07 |
| 171 | SPROCKET 22T. P=38.1 | 106.16.37.01 |
| 172 | SHAFT | 106.06.37.09 |
| 173 | SPROCKET 26T. P=38.1 | 106.16.37.02 |
| 174 | BEARING 320X180X86 (22236CDE4) | NSK |
| 175 | BEARING BOX COVER RIGHT | 106.06.37.11 |
| 176 | EXTERNAL SHIFT RING ASSY. | 106.16.37.04 |
| 177 | INTERNAL GEAR RING | 106.16.37.03 |
| 178 | SQ. KEY A36X140 | C7-4-95 |
| 179 | SEAL RING 180 | D3-1-67 |
| 180 | SPACER | 106.06.37.14 |
| 181 | SEAL RING 200 | D3-1-67 |
| 182 | CLUTCH ASSY. | 115.105.00 |
| 183 | TUBE ASSY. DIA. 600 | 115.105.01.00 |
| 184 | SHOE ASSY. | 115.105.02.00 |
| 185 | SPACER L=45.5 | 106.06.40.06 |
| 186 | BEARING BOX | 106.06.40.07 |
| 187 | SHAFT | 106.06.40.09 |
| 188 | RETAIN RING | 106.06.40.10 |
| 189 | BEARING BOX COVER | 106.06.40.11 |
| 190 | SPROCKET 47T. P=38.1 | 106.16.40.10 |
| 191 | THRUST RING | 106.16.40.13 |
| 192 | EXTERNAL SHIFT RING | 106.16.40.15 |
| 193 | BEARING 32144 | GB283-87 |
| 194 | BEARING SPACER | 106.06.40.16 |
| 195 | BEARING SPACER | 106.06.40.17 |
| 196 | SPROCKET 66T. P=38.1 | 106.16.40.05 |
| 197 | BEARING 3053144 | GB288-87 |
| 198 | SPACER | 106.06.40.19 |
| 199 | BEARING 53536 | GB288-87 |
| 200 | BEARING BOX | 106.06.40.20 |
| 201 | BEARING BOX COVER | 106.59.40.04 |
| 202 | SQ. KEY | C7-4-95 |
| 203 | EXTERNAL SHIFT RING | 106.59.40.05 |
| 204 | CLUTCH SHIFTER RING ASSY. | 106.02.31.00 |
| 205 | INTERNAL GEAR RING | 106.33.40.03 |
| 206 | SPROCKET 20T. P=50.8 | 106.33.40.05 |
| 207 | SPACER | 106.59.40.06 |
| 208 | BEARING BOX | 106.06.40.26 |
| 209 | SHAFT | 106.59.40.27 |
| 210 | SPROCKET 19T. P=50.8 | 106.06.40.28 |
| 211 | BEARING BOX | 106.06.40.29 |
| 212 | RETAIN RING | 106.06.40.30 |
| 213 | BEARING BOX COVER | 106.06.40.31 |
| 214 | SPACER | 106.59.40.08 |
| 215 | SQ. KEY A45X180 | C7-4-80 |
| 216 | OIL SEAL RING | 106.33.40.06 |
| 217 | SPACER | 106.59.40.09 |
| 218 | INTERNAL GEAR RING | 106.59.40.10 |
| 219 | DUAL POSITION CYLINDER | QF526D-00 |
| 220 | SHAFT YOKE ASSY. | 106.59.72.00 |
| 221 | SHAFT BOX ASSY. | 106.06.91.00 |
| 222 | OIL RETAINER | 106.16.70.03 |
| 223 | BALL VAVLE Q11F-16P-DN40 | LNB/G7 |
| 224 | AIR FILTER | LF-1-D-MAX1 |
| 225 | QUICK RELEASE VAVLE | QY444 |
| 226 | PRESSURE RELAY VALVE | QY411 |
| 227 | CROWN-O-MATIE VALVE | QY434 |
| 228 | VALVE | QY425 |
| 229 | FILTER | 106.02.295.00 |
| 230 | PUMP | CWZ2-100 |
| 231 | FELIEF VAVLE | P-B63 |
| 232 | SPACER | 126.11.05.01 |
| 233 | BEARING BOX | 106.51.301.02 |
| 234 | SHAFT | 106.51.301.03 |
| 235 | SPACER | 106.51.301.04 |
| 236 | BEARING BOX | 106.51.301.05 |
| 237 | BEARING BOX COVER | 126.11.05.02 |
| 238 | OIL SEAL 140X170X15 | D7-1-67 |
| 239 | TURNTABLE D | 106.51.301.09 |
| 240 | KEY A32X140 | C7-4-95 |
| 241 | BEARING 53524H | GB288-87 |
| 242 | SPACER | 106.51.301.11 |
| 243 | RING 300X8.6 | D4-4-66 |
| 244 | RING 400X8.6 | D4-4-66 |
| 245 | CLUTCH ASSY. | 115.22.00 |
| 246 | FLAT SPRING | 115.22.03 |
| 247 | TUBE ASSY. | 112.22.01.00 |
| 248 | FRICTION DISC | DBS75-70D-LS-4-2.0 |
| 249 | BOLT M30 | GB/T5783-1986 |
| 250 | WASHER 30 | GB93-87 |
| 251 | NUT M30 | GB6175-86 |
| 252 | EMERGENCY CALIPERS | DBS75-2-00 |
| 253 | SERVICE CALIPERS | DBS75-3-00 |
| 254 | BRAKE PAD | DBS75-2-01 |
| 255 | STEEL BACKING | DBS75-2-02 |
| 256 | SLEEVE | DBS75-2-15 |
| 257 | CLEVIS PIN WITH HEAD | DBS75-2-16 |
| 258 | SLEEVE | DBS75-2-14 |
| 259 | CLEVIS PIN WITH HEAD | DBS75-2-09 |
| 260 | SLEEVE | DBS75-2-08 |
| 261 | CYLINDER | DBS75-2-07.0 |
| 262 | SLEEVE | DBS75-2-13 |
| 263 | SLEEVE | DBS75-2-12 |
| 264 | CLEVIS PIN WITH HEAD | DBS75-2-11 |
| 265 | SUPPORT ARM | DBS75-2-06 |
| 266 | SLEEVE | DBS75-2-15 |
| 267 | CLEVIS PIN WITH HEAD | DBS75-3-05 |
| 268 | CYLINDER | DBS75-3-02.0 |
| 269 | SPRING | DBS75-3-03 |
| 270 | MAIN CALIPER ASSY. | KQ-00 |
| 271 | EMERGENCY CALIPER ASSY. | BQ-00 |
| 272 | DISC | P-04 |
| 273 | MAIN SERVICE CYLINDER ASSY. | KG-00 |
| 274 | SPRING CLIPPER RETURN | KQ-48 |
| 275 | PIN AMERGENCY SUPPORT | KQ-12 |
| 276 | PIN CYLINDER | KQ-08 |
| 277 | PIN CALIPER PIVOT | KQ-10 |
| 278 | PIN, BRAKE PAD | KQ-11 |
| 279 | BRAKE BLOCK (PAD OR SHOE) | KQ-21 |
| 280 | BUSH | KQ-32 |
| 281 | BUSH | KQ-34 |
| 282 | SPACER | KQ-16 |
| 283 | BUSH | KB-36 |
| 284 | BUSH | KB-35 |
| 285 | BUSH | KB-37 |
| 286 | BUSH | KB-38 |
| 287 | PIN, EMERGENCY SUPPORT | BG-13 |
| 288 | BUSH | BQ-34 |
| 289 | EMERGENCY CYLINDER ASSEMBLY | BG-00 |
| 290 | PIN, CYLINDER | BQ-09 |
| 291 | PIN, CALIPER PIVOT | BQ-10 |
| 292 | PIN, BRAKE PAD | BQ-11 |
| 293 | BUSH | BQ-33 |
| 294 | BRAKE BLOCK (PAD OR SHOE) | BQ-22 |
| 295 | BUSH | BQ-32 |
| 296 | SPACER | BQ-17 |
| 297 | BUSH | BB-36 |
| 298 | BUSH | BB-35 |
| 299 | BUSH | BB-37 |
On-Site JC70D Drawworks Fault Repair Cases
Case 1: Brake Slippage & Hoisting Safety Risk
A drilling rig’s JC70D drawworks experienced dangerous brake slippage during heavy hoisting, caused by worn DBS75 brake pads and degraded friction discs. The worn components failed to generate sufficient braking torque, risking dropped pipe and equipment damage. Replacing the old brake pads and friction discs with new OEM units, then calibrating the brake calipers, restored full stopping power and safe operation.
Case 2: Lubrication Leakage & Bearing Wear
A JC70D drawworks developed persistent oil leakage from the bearing box cover, traced to a damaged 106.16.36.04 oil seal ring that lost sealing integrity under vibration. The leak led to low lubrication levels and accelerated bearing wear. Installing a new OEM seal ring, cleaning the bearing box, and refilling lubricant eliminated leaks and protected the bearings from further damage.
Case 3: Clutch Engagement Failure
A JC70D drawworks clutch failed to engage properly, preventing hoisting operations, due to a faulty dual-position cylinder (QF526D-00) and worn external shift ring. The damaged components disrupted clutch actuation and halted lifting workflows. Replacing the cylinder and shift ring, then adjusting the clutch linkage, restored smooth engagement and disengagement.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible only with the JC70D drawworks? | Yes, every part in this catalog is precision designed exclusively for the JC70D drawworks, with exact OEM part numbers and dimensions to guarantee perfect fitment and performance. |
| What is the recommended replacement interval for brake pads? | For heavy drilling use, replace DBS75 brake pads every 2,000 operating hours, or immediately if slippage occurs to maintain safe hoisting braking. |
| Do these bearings meet API and GB drilling standards? | All bearings and critical structural parts comply with API 8C and GB/T drilling equipment standards, ensuring safety and reliability for heavy hoisting loads. |
Procurement Guidance & Closing Statement
For maintenance and procurement teams responsible for keeping JC70D drawworks operational in high-demand oilfield drilling environments, this spare parts catalog provides a fully OEM-compliant, quality-assured sourcing solution for all critical drawworks components. Backed by strict manufacturing standards and exact part number matching, these components eliminate compatibility risks, streamline on-site repair workflows, and provide a clear technical benchmark to resolve drawworks faults quickly and effectively. Whether stocking for routine preventive maintenance, emergency brake/clutch repairs, or planned full drawworks overhauls, these model-specific spare parts ensure adherence to industry safety and performance standards, minimize costly unplanned hoisting downtime in remote drilling locations, and preserve the long-term service life of your JC70D drawworks equipment. Secure the precise shafts, gears, bearings, brakes, and sealing components your drawworks needs to maintain reliable, safe, and uninterrupted drilling hoisting operations.
