NTN 63/28 LLUNR/2AS - Deep Groove Ball Bearing 28x68x18 mm (Contact Seals & Snap‑Ring)

NTN 63/28 LLUNR/2AS - Deep Groove Ball Bearing 28x68x18 mm (Contact Seals & Snap‑Ring)

The NTN 63/28 LLUNR/2AS is a single-row deep groove ball bearing with integrated contact seals on both sides (2AS) and a groove plus snap-ring on the outer ring (LLUNR). Engineered for reliability and longevity, it fits shafts with a 28 mm bore and a housing diameter of 68 mm, offering increased protection from dust and moisture.

Key Specifications:

• Dimensions: 28 x 68 x 18 mm

• Seal Type: 2AS - contact seals both sides for grease retention and contamination resistance.

• Snap-Ring Groove: LLU - ensures low-profile mounting convenience

• Load Ratings: Dynamic ~29.6 kN, Static ~14 kN

• Speed & Temp Range: Up to 7400 RPM (grease-lubricated); operating temperatures from -20 °C to +110 °C

• Materials & Construction: Hardened bearing steel, stamped steel cage, sealed for low-maintenance use

Benefits at a Glance:

• Superior sealing with 2AS design prolongs service life under challenging environments

• Snap-ring groove simplifies installation and retention in housings

• High radial capacity at moderate speeds ensures durability

• Low maintenance, sealed design for B2B readiness

FAQ - Frequently Asked Questions

1. What is “LLUNR/2AS”?
It signifies a ball bearing with LLU (snap‑ring groove) and NR/2AS (contact seals on both sides).

2. What dimensions does this bearing have?
Inner diameter: 28 mm; outer diameter: 68 mm; width: 18 mm.

3. Are the seals in contact or non-contact?
They are contact seals, providing exceptional protection against dust and grease leakage.

4. What is the role of the snap-ring?
The snap-ring groove enables easy axial retention when mounted in housings, making mechanical assembly more reliable.

5. In what applications is this bearing ideal?
Perfect for industrial motors, conveyors, and heavy-duty machinery where durability and low maintenance are critical.

Embedded Keywords

“NTN 63/28 LLUNR/2AS deep groove bearing”, “28x68x18 ball bearing with snap ring”, “NTN sealed bearing 2AS”, “deep groove bearing 63/28”, “NTN bearings B2B”.