PSC 3130

Overview

The Product Service Code (PSC) is a governmentwide taxonomy used to classify the goods and services the U.S. federal government buys, enabling consistent FPDS reporting and spend analysis; the General Services Administration maintains the PSC Manual that governs these codes. ¹
PSC 3130 — Bearings, Mounted — covers mounted antifriction bearing units in which balls or rollers are retained between inner and outer rings and installed within a housing or mount. Typical forms include pillow block, flange, cartridge, take-up, hanger box, flat box, and step box units; unmounted antifriction and plain bearings belong under PSC 3110 and PSC 3120, respectively. ¹

See also on G2X:

• G2X — PSC 3130 overview
• G2X — PSC 3110 Bearings, Antifriction, Unmounted
• G2X — PSC 3120 Bearings, Plain, Unmounted

What this PSC covers

• Mounted antifriction bearing assemblies with balls or rollers in inner/outer rings. ¹
• Pillow block bearing units with integrated housings for shaft support. ¹
• Flange-mounted bearing units for wall or panel attachment. ¹
• Cartridge-style bearing units designed to fit into machined housings. ¹
• Take-up bearing units for adjustable shaft center distance applications. ¹
• Hanger, flat box, and step box bearing units for overhead, flat-mount, or stepped-shaft mounting. ¹

Related NAICS and PSC codes

Type	Code	Descriptor
PSC	3110	Bearings, Antifriction, Unmounted
PSC	3120	Bearings, Plain, Unmounted
NAICS	332991	Ball and Roller Bearing Manufacturing
NAICS	333613	Mechanical Power Transmission Equipment Manufacturing

PSC descriptors per the PSC Manual. ¹
NAICS descriptors per U.S. Census NAICS definitions. ³

Scope boundaries and exclusions

• Excludes unmounted antifriction bearings, which are coded under PSC 3110. ¹
• Excludes plain (non-rolling-element) unmounted bearings, which are coded under PSC 3120. ¹
• Standalone shafts and shafting are not bearing units and are generally coded under PSC 3040 Miscellaneous Power Transmission Equipment. ¹

DLA supply management note

Within DoD supply management assignments, FSC 3110, 3120, and 3130 are managed by Defense Supply Center Richmond (DSCR), indicating DLA Aviation as the primary buying activity for these bearing classes. ²

Coding tips for mixed buys

When a purchase includes multiple items, select the PSC that represents the predominant product or service on the award; use PSC 3130 when mounted bearing units are the principal deliverable, and apply environmental attributes in FPDS based on the predominant line. ¹

Frequently asked questions

• How does PSC 3130 differ from PSC 3110 and PSC 3120?
  PSC 3130 covers mounted rolling-element bearing units in housings. PSC 3110 covers unmounted antifriction (ball/roller) bearings; PSC 3120 covers unmounted plain bearings/bushings. ¹

• Which NAICS codes commonly align with mounted bearing manufacturing or supply?
  Manufacturing of rolling-element bearings aligns with NAICS 332991; manufacturing of plain bearings and other power transmission equipment aligns with NAICS 333613. Selection depends on the product being produced or supplied. ³

• Are accessories like separate shafts or housings part of PSC 3130?
  No. The code covers mounted bearing units. Separate shafts/shafting are generally PSC 3040, and unmounted bearings map to PSC 3110 or PSC 3120 per construction. ¹

• Are environmental attributes reported for mounted bearing buys?
  Yes. FPDS allows reporting of environmental attributes (e.g., energy efficient, biobased) and instructs agencies to code attributes for the predominant product on the award; applicability depends on the contract requirements. ¹

• Which DLA buying activity manages PSC 3130 items?
  Defense Supply Center Richmond (DLA Aviation) is listed as the managing center for bearing classes including 3130, per DFARS Procedures, Guidance, and Information (PGI) assignments. ²

Useful resources

• G2X — PSC 3130
• Product and Service Codes (PSC) Manual, April 2025 Edition (official). ¹
• DFARS PGI Part 208 — DLA supply assignment table for FSCs. ²
• U.S. Census NAICS 2022 definitions for 332991 and 333613. ³

References

1. Acquisition.gov — PSC Manual April 2025 (PDF), Section D: Product Codes; Group 31 — Bearings; class 3130 Includes/Excludes; introductory guidance on FPDS reporting. https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
2. Acquisition.gov — DFARS PGI Part 208, Required Sources of Supplies and Services (DLA center assignments including FSC 3110, 3120, 3130). https://www.acquisition.gov/dfarspgi/pgi-part-208-required-sources-supplies-and-services
3. U.S. Census Bureau — NAICS resources (Manufacturing, Sectors 31–33), including NAICS 332991 Ball and Roller Bearing Manufacturing and NAICS 333613 Mechanical Power Transmission Equipment Manufacturing. https://www.census.gov/naics/resources/archives/sect31-33.html