4-1/2″ x 3-1/2″ Slip Insert for Varco Style Slips | Part 20163
The 4-1/2″ x 3-1/2″ Slip Insert (Pan P/N: 20163) is a robust reduction insert designed to adapt 4-1/2″ rotary slips for the secure handling of 3-1/2″ OD drill pipe and tubing. Engineered for Varco Style RSST (Short) and RSMD (Medium) slips, these inserts provide a seamless 1-inch thickness profile. Manufactured from forged alloy steel and heat-treated to API 7K standards, they ensure a powerful mechanical grip while maintaining the axial support necessary for heavy drill strings.
Description
Comprehensive Technical Data
High-Reduction Load Engineering
Reducing a 4-1/2″ slip body down to a 3-1/2″ pipe requires a specialized 1-inch thick insert. Our engineering ensures these thick-profile inserts remain stable under extreme pressure:
Anti-Crush Tooth Geometry: The precision-machined biting surface is designed to distribute radial clamping forces evenly, preventing “bottlenecking” or deformation of the 3-1/2″ pipe wall.
Premium Metallurgy: CNC-machined from forged 8620 alloy steel, ensuring a superior grain structure that resists internal stress better than cast alternatives.
Controlled Case-Hardening: Surface hardened to 58-62 HRC for maximum tooth longevity, supported by a shock-absorbent core that withstands the high-impact “setting” of slips.
Technical Specifications Table
| Property | Specification |
| Slip Size (Body) | 4-1/2″ |
| Pipe/Tubing OD Compatibility | 3-1/2″ |
| Dimensions (Approx.) | 2-3/4″ x 1-1/4″ x 1″ |
| Pan Part Number | 20163 |
| Full Set (RSST) | 36 Pieces (P/N: 20163-36) |
| Full Set (RSMD) | 45 Pieces (P/N: 20163-45) |
| Material Grade | Case-Hardened Forged Alloy Steel |
| Standard Compliance | API Spec 7K |
Industry Cross-Reference Part Numbers
This insert is a precision-engineered, high-performance alternative for the following industry part numbers:
2163 | 10163 | 21-63 | ON-2163 | 71-2163 | 671128-1 | 80113 | 1453 | 36-2163 | 6421636 | 23-160
Equipment Compatibility
Varco Style Slips: Optimized for Regular Slip Short (RSST) and Regular Slip Medium (RSMD).
Drilling Slips: Compatible with SDS, SDML, and SDXL slip bodies utilizing 1-inch reduction inserts.
Workover Rigs: Highly reliable for high-frequency tubing trips where pipe size transitions occur.
Key Performance Advantages
Optimized Grip Consistency: Specifically designed to penetrate through pipe scale and heavy drilling fluids for a secure mechanical hold.
Precision Seating: Machined to exact tolerances to prevent “insert roll” or vibration within the slip body.
Extended Wear Life: Superior heat-treatment prevents teeth from “rounding off” under heavy axial loads.
Corrosion Protection: Finished with a protective industrial coating to withstand offshore salt spray and high-humidity environments.
Why Pan Oil Tools? (SEO Content)
Pan Industries is a globally recognized manufacturer of API 7K Pipe Handling Spares. Our 4-1/2″ x 3-1/2″ reduction inserts are the preferred choice for drilling contractors who prioritize rig floor safety and tool versatility. We maintain heavy stocks of 36-piece and 45-piece sets for immediate global shipping, provided with full material traceability (MTC).
Compatibility Disclaimer
Manufacturer names (Varco, NOV, Baash-Ross), equipment brands, and reference part numbers are utilized strictly for identification purposes. Pan Industries is an independent manufacturer and is not affiliated with, endorsed by, or licensed by any original equipment manufacturers (OEMs). Our products are high-quality, compatible replacements designed for use in OEM equipment.
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