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Inch Size Ball Bearings

Inch Size Deep Groove Ball Bearings (commonly known as the R Series) are designed for applications configured around imperial fractional measurements. Manufactured to fractional-inch dimensions (bore, outer diameter, and width), these bearings provide smooth operational performance, low noise, high rotational precision, and minimal dynamic friction torque.

Classification :

Inch Size Ball Bearings

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hlbearing@hlgq-steelball.com

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Product Overview

Available in open, metal shielded (ZZ), and rubber sealed (2RS) options, our inch-series bearings are built with high-grade GCr15 Chrome Steel (or optional Stainless Steel) to meet stringent tolerance requirements for North American and global OEM equipment.

Key Features & Advantages

Standard Fractional Imperial Sizing: Precise fractional dimensions (in inches) ensure seamless integration into machinery designed to imperial standards.

High Load Capacity & Speed: Deep raceway grooves optimize stress distribution, supporting radial loads and light bidirectional axial loads at elevated RPMs.

Versatile Sealing Solutions

Open Type: Ideal for continuous oil bath lubrication or low-friction applications.

ZZ (Metal Shields): Provides dust resistance while maintaining high-speed capabilities.

2RS (Rubber Seals): Offers maximum protection against dirt, moisture, and harsh environmental contaminants.

Superior Material & Finish: Crafted from high-carbon chromium bearing steel (AISI 52100 / GCr15) with precision-ground super-finished raceways for low vibration and long service life.

Custom Modifications: Available with flanged outer rings (FR series) for axial positioning and dynamic snap rings upon request.

Model No.	Bore (d) [Inch]	Outer Dia (D) [Inch]	Width (B) [Inch] )	Bore (d) [mm]	Outer Dia (D) [mm]	Width (B) [mm]	Shield / Seal Type
R2 / R2ZZ	0.1250 (1/8")	0.3750 (3/8")	0.1562 (5/32")	3.175	9.525	3.967	Open / ZZ / 2RS
R3 / R3ZZ	0.1875 (3/16")	0.5000 (1/2")	0.1960 (3/16")	4.762	12.7	4.978	Open / ZZ / 2RS
R4 / R4ZZ / R4-2RS	0.2500 (1/4")	0.6250 (5/8")	0.1960 (0.2500)	6.35	15.875	4.978 / 6.35	Open / ZZ / 2RS
R6 / R6ZZ / R6-2RS	0.3750 (3/8")	0.8750 (7/8")	0.2812 (9/32")	9.525	22.225	7.142	Open / ZZ / 2RS
R8 / R8ZZ / R8-2RS	0.5000 (1/2")	1.1250 (1-1/8")	0.3125 (5/16")	12.7	28.575	7.938	Open / ZZ / 2RS
R10 / R10ZZ / R10-2RS	0.6250 (5/8")	1.3750 (1-3/8")	0.3437 (11/32")	15.875	34.925	8.731	Open / ZZ / 2RS
R12 / R12ZZ / R12-2RS	0.7500 (3/4")	1.6250 (1-5/8")	0.4375 (7/16")	19.05	41.275	11.112	Open / ZZ / 2RS
R14 / R14ZZ / R14-2RS	0.8750 (7/8")	1.8750 (1-7/8")	0.5000 (1/2")	22.225	47.625	12.7	Open / ZZ / 2RS
R16 / R16ZZ / R16-2RS	1.0000 (1")	2.0000 (2")	0.5000 (1/2")	25.4	50.8	12.7	Open / ZZ / 2RS

FACTORY WORKSHOP

We continually invest in research and development to enhance our product offerings and manufacturing processes. Our goal is to maintain our position as a leader in the industry while embracing new technologies and trends that shape the future of metal production.

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With a strong export network, Shandong Lu Tisco Stainless Steel Co., Ltd. serves clients across the globe. Our dedicated customer service team ensures that every client receives personalized attention, timely deliveries, and support throughout the product lifecycle.

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Inch Size Ball Bearings