Product Overview
This curated selection of Iron Roughneck ST-100 replacement parts includes all high-wear structural, bearing, bushing, and hydraulic components needed for routine upkeep, mid-life repairs, and full system overhauls. Covering key part families like the M364000 series pins/bearings, 30172475 series self-lubricating bushings, and specialized track rollers/strut assemblies, each part is reverse-engineered to match original equipment specs—no custom modifications required for installation. The lineup prioritizes heavy-duty, abrasion-resistant materials to withstand repeated torque loads, debris exposure, and cyclic rig operation, making it the go-to choice for maintaining ST-100 performance.
Core Functional Specifications
These ST-100 replacement components are built to handle the rigorous demands of pipe handling: pivot pins and arm bearings support peak operational torque up to 120,000 ft-lbs, self-lubricating bushings reduce friction by 35% compared to standard bronze alternatives, and track rollers maintain smooth linear movement with radial runout limited to 0.002 inches. Grease fittings enable targeted lubrication for high-wear joints, control valve assemblies ensure responsive hydraulic operation, and compression springs deliver consistent load retention to keep the ST-100 calibrated for precise pipe clamping and rotation.
Structural Design Features
Every part is engineered for field durability and easy servicing: critical pins and clevis components are forged from high-tensile alloy steel with a minimum Rockwell hardness of HRC 56 for impact resistance; self-lubricating bushings use a DP4 high-performance composite lining to eliminate frequent re-greasing in remote locations; flanged and Garlock-type bushings feature integrated debris barriers to block drilling mud and particulate contamination; and modular component design allows for single-part replacement without full ST-100 disassembly, cutting repair labor time by up to 50%.
Applicable Operating Conditions
These Iron Roughneck ST-100 parts perform reliably across all drilling environments: onshore land rigs (desert, arctic, and temperate zones), offshore jack-up and platform rigs (saltwater corrosion, high-humidity conditions), directional drilling operations, and high-cycle pipe handling workflows. They are rated for operating temperatures ranging from -40°F to 190°F, and resist degradation from drilling mud, hydraulic fluid, and abrasive formation cuttings—making them suitable for both planned maintenance and emergency field repairs.
Maintenance & Service Recommendations
To maximize the lifespan of ST-100 components and minimize downtime, follow these industry-approved protocols: lubricate all pivot pins and bushings via the dedicated grease fittings every 25 operating hours using NLGI 2 high-pressure lithium grease; inspect track rollers and clevis pins for wear, pitting, or bending every 500 hours, replacing parts with wear exceeding 0.010 inches; test control valve functionality monthly to eliminate hydraulic lag; and replace compression springs and strut components annually to maintain consistent load tension. Document all part replacements and torque specs to track wear patterns and schedule proactive maintenance.
We supply the following spare parts:
| DP SN | P/N | DESCRIPTION |
| 1 | M364000474 | BEARING, ARM PIVOT, MFR: NOV – VARCO, P/N# M364000474 |
| 2 | M364000762 | ROD:STRUT,F/ST-100,#M364000762 |
| 3 | M364000764 | SPRING:COMPRESSION,F/ST-100,#M364000764 |
| 4 | M364001639 | KIT:RETENTION CABLE,F/ST-100,#M364001639 |
| 5 | M364001239 | PIN,CAM:HEAD TILT,F/ROUGHNECK,#M364001239 |
| 6 | M364001238 | PIN,ARM:F/ROUGHNECK,#M364001238 |
| 6 | M364001238 | PIN,ARM:F/ROUGHNECK,#M364001238 |
| 7 | 30179219-4 | ARM, BUSHING 2.000 LONG ST-80C |
| 8 | 30172475-28-12 | BUSHING:GARLOCK TYPE,F/ROUGHNECK,#30172475-28-12 |
| 9 | M364001610 | BUSHING:F/ROUGHNECK,#M364001610 |
| 10 | M364001680 | PIN,CAM:HEAD TILT,F/ROUGHNECK,#M364001680 |
| 11 | 30183076 | BUSHING,FLANGED:ORKOT,F/IRON ROUGHNECK ST100,#30183076 |
| 12 | M364000489 | BUSHING:GUIDE PIN,F/IRON ROUGHNECK ST120,#M364000489 |
| 13 | M364001626 | SPRING:CUP,F/IRON ROUGHNECK MODEL ST-100,#M364001626 |
| 14 | 10490052-001 | FITTING,GREASE:STRAIGHT,F/ST-100 IRON ROUGHNECK,#53201 |
| 15 | 10477248-001 | ASSY, CONTROL VALVE ST-100 |
| 16 | 50068-012F06 | SCREW, CAP HEAD (METRIC) |
| 17 | 30172475-48-28 | BUSHING, DP4 HI PRO SELF LUBE |
| 18 | 30172475-56-32 | BUSHING, DP4 HI PRO SELF LUBE |
| 19 | 30183554 | ROLLER, TRACK COMBINED |
| 20 | M364000763 | HOUSING, STRUT ROD |
| 21 | 10387559-001 | COVER, SOCKET ST-80CL WELDMENTLRON ROUGHNECK |
| 22 | M364000410 | SOCKET, FLOOR ST80CL |
| 23 | M364000475 | PIN, BOGEY |
| 24 | M364001268 | PIN, EXTENDED CYLINDER ST-100 |
| 25 | 10777727-001 | PIN, GUIDE 14.37 ST-100 IRON ROUGHNECK |
| 26 | M364000501 | PIN, CLEVIS SW 10 ST120 |
| 27 | 83472 | PIN, CLEVIS |
| 28 | 86778 | PIN, CLEVIS |
| 29 | 84159-2 | BEARING, JOURNAL |
| 30 | 97131-28-28 | BEARING, HIGH PERF SELF-LUBE |
| 31 | 30172475-28-24 | BUSHING, DP4 HI PRO SELF LUBE |
| 32 | 30172475-28-18 | BUSHING, DP4 HI PRO SELF LUBE |
| 33 | 10387703-002 | ROLLER, PROPRIETARY TRACK ST-100 IRON ROUGHNECK |
Field Failure Repair Case Studies
Case 1: Worn Arm Bushing Causing Pipe Misalignment
A land drilling rig’s ST-100 struggled to grip drill pipe evenly, leading to damaged tool joints and delayed connections. Inspection revealed excessive wear on 30172475-28-12 Garlock-type bushings, creating slack in the pivot arm. Technicians replaced the worn bushings and re-torqued the M364001238 arm pins, restoring proper alignment and eliminating misalignment issues in 2.5 hours.
Case 2: Strut Rod Fatigue Leading to System Lockup
An offshore rig’s ST-100 failed to extend fully during pipe break-out, halting operations. The M364000762 strut rod had developed a fatigue crack from cyclic loading. Crews swapped in a new strut rod and paired it with a fresh M364000764 compression spring, recalibrating the assembly to restore full arm movement and get the rig back online quickly.
Case 3: Track Roller Wear Causing Excessive Vibration
A directional drilling team noticed severe vibration from the ST-100 track assembly, leading to inconsistent pipe rotation. The 10387703 proprietary track rollers had flat spots from abrasive mud exposure. Replacing the worn rollers and realigning the guide pin eliminated vibration, preventing secondary damage to adjacent bearings and pins.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Will these parts fit my Iron Roughneck ST-100 without modifications? | Yes, all parts are precision-machined to match OEM part numbers (including M364000 and 30172475 series) for the ST-100, ensuring a direct, hassle-free fit with no alterations needed for installation. |
| What makes the 30172475 self-lubricating bushings better than standard options? | These bushings use a high-performance composite lining that reduces friction and requires less frequent lubrication, lasting up to 3x longer than standard bronze bushings in abrasive drilling conditions and lowering long-term maintenance labor. |
| Can I use these parts for both routine maintenance and emergency repairs? | Absolutely — this parts list includes everyday wear items (bushings, rollers, grease fittings) and critical emergency components (strut rods, control valves, pivot pins) to cover all ST-100 repair and maintenance scenarios. |
Procurement Guidance & Closing Reference
This Iron Roughneck ST-100 replacement parts compilation serves as your definitive sourcing and technical reference, combining strict quality benchmarks, OEM compatibility, and field-proven durability to keep your pipe handling equipment operational. Whether you are stocking inventory for scheduled maintenance, preparing for unexpected breakdowns, or completing a full system overhaul, these components deliver consistent performance and reduce total cost of ownership by minimizing downtime and repeat repairs.
Each part is manufactured to adhere to global drilling equipment standards, with full traceability and spec matching to support your rig’s compliance and reliability goals. Secure these high-quality ST-100 replacement parts to maintain peak equipment performance, streamline your maintenance workflow, and protect your drilling operations from costly delays related to subpar components. For bulk ordering, custom part kits, or technical support to match the exact parts to your ST-100 configuration, reach out to finalize your parts supply.
