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Smith Bearing CR-3 cam follower bearing, standard stud, unsealed, alloy steel roller, carbon steel stud

Smith Bearing

Smith Bearing CR-3 cam follower bearing, standard stud, unsealed

SKU CH-2AAW-YTECV

Needle-roller cam follower with a 1 1/4-12 concentric stud, 3-inch alloy-steel roller and screwdriver-slot drive for standard-duty linear motion

  • Alloy-steel needle rollers handle high radial loads
  • AISI 52100 bearing steel resists wear and fatigue
  • Concentric stud simplifies alignment during installation
  • Slotted drive allows quick adjustment with standard tools
  • Open design suits lubricated environments where seals are unnecessary

Purpose-built cam follower

The Smith Bearing CR-3 is a needle-roller cam follower with a concentric standard stud, designed for track-roller or linear-guide applications where a compact, high-capacity rolling element is required. Its alloy-steel construction suits industrial machinery, material-handling equipment and automotive tooling that demand reliable rotation under radial load.

Sustained-load behaviour

The single row of AISI 52100 needle rollers distributes contact stress across a 3-inch roller diameter and 1 3/4-inch width, reducing peak pressure during continuous operation. An unsealed, open closure allows lubricant to reach the rolling elements directly, helping maintain consistent friction characteristics over long duty cycles.

Build and mounting implications

The carbon-steel stud carries a 1 1/4-12 thread and a slotted drive for straightforward installation with a standard screwdriver. Flat roller head geometry provides even track contact, while the absence of seals simplifies relubrication schedules in environments where contamination can be managed externally.

Highlights

  • Alloy-steel needle rollers handle high radial loads
  • AISI 52100 bearing steel resists wear and fatigue
  • Concentric stud simplifies alignment during installation
  • Slotted drive allows quick adjustment with standard tools
  • Open design suits lubricated environments where seals are unnecessary

Specifications

No published specifications for this item yet.

Questions about this item

How much heat does the CR-3 cam follower generate during continuous all-day operation?

The unsealed needle-roller design with AISI 52100 alloy steel runs cool under normal loads because there is no seal drag; heat build-up depends on your shaft speed and lubrication interval rather than the bearing itself.

What shaft and lubrication setup must I already have for the CR-3 to work?

You need a 1 1/4 In.-12 threaded hole for the concentric stud and a way to supply oil or grease to the open needle rollers since the bearing ships without seals or pre-packed lubricant.

Will the CR-3 mate with older equipment that uses a flat-faced 3-inch roller?

Yes — the flat roller head and 3-inch diameter match legacy flat-track profiles, while the 1 3/4-inch roller width and standard stud keep the mounting envelope identical to earlier inch-series cam followers.

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