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EZOHigh-Precision Extended Inner Ring Radial Ball Bearings

EZO Miniature Ball Bearing: R155, Dbl Shield, 5/32 in Bore, 5/16 in OD, 0.125 in Wd

The EZO R155 is a high-precision extended inner ring radial ball bearing, supplied as a double-shielded miniature bearing with an inch system of measurement. It features a 5/32-inch bore, 5/16-inch outer diameter…

SKU 3G-OTH-98561

Brand
EZO
Item
Miniature Ball Bearing: R155, Dbl Shield, 5/32 in Bore, 5/16 in OD, 0.125 in Wd
Part Number
SRW155ZZA3MC3AF2
Category
High-Precision Extended Inner Ring Radial Ball Bearings
Available to Order
Also known as:SRW155ZZA3MC3AF2EZO
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

EZO
Manufacturer Part Number
SRW155ZZA3MC3AF2
Type
Dbl Shield
Bore
5/32 in
OD
5/16 in
Wd
0.125 in
Max Temp
302°F
System of Measurement
Inch
Bearing Industry Number
R155

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EZO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The EZO R155 is a high-precision extended inner ring radial ball bearing, supplied as a double-shielded miniature bearing with an inch system of measurement. It features a 5/32-inch bore, 5/16-inch outer diameter, and 0.125-inch width, with a maximum operating temperature of 302°F. The bearing carries the industry number R155 and manufacturer part number SRW155ZZA3MC3AF2.

Frequently Asked Questions

What is the EZO R155 miniature ball bearing used for?

The EZO R155 is a high-precision extended inner ring radial ball bearing used in miniature mechanisms such as medical devices, instrumentation, and robotics. Its double-shielded design and 302°F max temperature suit applications requiring low friction and contamination resistance in confined spaces.

What are the specifications of the EZO R155 bearing?

The EZO R155 is an inch-system miniature ball bearing with a 5/32 in bore, 5/16 in OD, and 0.125 in width. It is double-shielded, rated for 302°F max temperature, and carries industry number R155 with MPN SRW155ZZA3MC3AF2.

Where to buy the EZO R155 bearing worldwide?

3G Electric supplies the EZO R155 bearing worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver this high-precision miniature bearing to your facility, regardless of location.

How to select the correct EZO R155 bearing for an application?

Select the EZO R155 by verifying inch dimensions: 5/32 in bore, 5/16 in OD, and 0.125 in width. Confirm double-shielded type for contamination resistance and 302°F max temperature for your operating environment. Consult 3G Electric for application-specific guidance.

Used in

Common applications for EZO
Small electric motors — EZO R144 and R155 flanged miniature bearings for rotor support in compact motor housings.
Precision instruments — EZO R166 and R2-6 oil-lubricated bearings for low-torque rotary movement in measuring devices.
Medical and laboratory equipment — EZO 188 and 1810 double-shielded bearings for small pumps, agitators, and sample handling mechanisms.
Optical and encoder assemblies — EZO R1 and R2-5 miniature bearings for precise angular positioning in limited space.
Industrial encoders and tachometers — EZO extended inner ring flanged bearings for shaft mounting where axial location is required.
Aerospace and defense instrumentation — EZO miniature ball bearings in inch dimensions for compact control and guidance subassemblies.
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EZO Products

3G Electric supplies EZO high-precision extended inner ring radial ball bearings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
EZO
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Inch-system miniature bearing with 3/16 in bore, 5/16 in OD, and 0.125 in width. Double-shielded design for contamination protection. Maximum operating temperature 302°F. Suitable for high-speed, low-torque applications in compact mechanisms such as dental handpieces, small motors, and instrumentation
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Inch-system double-shielded radial ball bearing with 3/64 in bore, 5/32 in OD, and 0.094 in width. Extended inner ring design for compact assemblies. Maximum operating temperature 302°F. Suitable for precision instruments, medical devices, and small electric motors requiring high accuracy and contamination protection
EZO
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This inch-system radial ball bearing features a 5/32-inch bore, 5/16-inch outer diameter, and 0.125-inch width. Double shields protect against contamination, and the maximum operating temperature is 302°F. Suitable for applications requiring compact size and low friction, such as instrumentation, medical devices, and small electric motors
EZO
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EZO Miniature Ball Bearing: 1810, Dbl Shield, 5/16 in Bore, 1/2 in OD, 0.156 in Wd, 302°F Max Temp (MPN SRW1810ZZA3MC3AF2)
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EZO Miniature Ball Bearing: 168, Dbl Shield, 1/4 in Bore, 3/8 in OD, 0.125 in Wd, 302°F Max Temp (MPN SRW168ZZSMC3A3AF2)
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This inch-system radial ball bearing has a 1/16 in bore, 3/16 in outer diameter, and 0.109 in width. Double-shielded design protects against contamination. Maximum operating temperature is 302°F. Suitable for precision instruments, medical devices, and small electric motors where compact size and low friction are required

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Inch-system radial ball bearing with 1/8 in bore, 3/8 in OD, and 0.141 in width. Double shielded design. Maximum operating temperature 302°F. Suitable for compact rotary motion applications such as small motors and instrumentation
EZO
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Inch-system miniature radial ball bearing with 1/16 in bore, 3/16 in OD, and 0.109 in width. Double shielded for contamination resistance, rated for 302°F max temperature. Suitable for precision instruments, small motors, and medical devices requiring compact size and accuracy
EZO
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Inch-system miniature ball bearing with 1/8 in bore, 5/16 in OD, and 0.141 in width. Double shielded design for contamination resistance. Suitable for compact mechanisms such as small motors, instrumentation, and precision machinery. Maximum operating temperature 302°F
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Inch-system radial ball bearing with 5/64 in bore, 3/16 in OD, and 0.094 in width. Double-shielded design protects against contaminants; maximum operating temperature 302°F. Suitable for compact mechanisms requiring low friction and high precision, such as small motors and instrumentation
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EZO Miniature Ball Bearing: R2, Dbl Shield, 1/8 in Bore, 3/8 in OD, 0.156 in Wd, 302°F Max Temp, Oil (MPN SRW2ZZA3MC3AF2)
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EZO Miniature Ball Bearing: R144, Open, 1/8 in Bore, 1/4 in OD, 0.109 in Wd, Stainless Steel Ring (MPN SRW144 A3MC3AF2)
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EZO Miniature Ball Bearing: R166, Dbl Shield, 3/16 in Bore, 3/8 in OD, 0.125 in Wd, 302°F Max Temp (MPN SRW166ZZA3MC3SRL)
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Inch-system radial ball bearing with double shield, 3/16 in bore, 1/2 in OD, 0.196 in width. Extended inner ring design for shaft positioning. Max operating temperature 302°F. Used in precision instruments, small motors, and light-duty industrial equipment

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