NTN M-AS205 D1 Insert Bearing 25x52x27

Overview

The NTN M-AS205 D1 is a precision insert ball bearing designed for housed bearing units used in industrial rotating equipment. It features a spherical outer ring for self-alignment within the housing, an extended inner ring with two set screws for secure shaft locking and double contact seals that retain lubricant while preventing contamination. This bearing is intended for continuous operation in applications exposed to vibration, shaft misalignment and demanding industrial environments.

Industrial Applications

The bearing is installed in conveyor systems, agricultural machinery, food processing equipment, packaging machines, ventilation systems, material handling equipment, woodworking machinery, textile machinery, production lines and OEM housed bearing assemblies. It is commonly used with pillow block, flange and take-up bearing units operating under continuous radial loads.

Construction

The M-AS205 D1 design combines a precision-ground raceway, spherical outside diameter, extended inner ring and dual set screw locking system. The self-aligning outer surface compensates for minor shaft and housing misalignment, while the contact seals protect the rolling elements against dust, moisture and grease loss during long-term operation.

Material

The inner ring, outer ring and rolling elements are manufactured from through-hardened bearing steel to provide high fatigue strength and wear resistance. The bearing is equipped with nitrile rubber contact seals and a pressed steel cage. It is supplied factory lubricated and ready for installation.

Technical Specification

Type: Insert Ball Bearing

Brand: NTN

Series: M-AS205 D1

Design: Spherical Outside Diameter with Extended Inner Ring

Inner Diameter: 25 mm

Outer Diameter: 52 mm

Inner Ring Width: 27 mm

Outer Ring Width: 15 mm

Locking Method: Two Set Screws

Sealing: Double Contact Seals

Material: Through-Hardened Bearing Steel

Application: Pillow block units, flange units, conveyor systems, agricultural machinery, industrial equipment and OEM applications

Why Industrial Buyers Choose This Product

Industrial buyers specify the NTN M-AS205 D1 for OEM replacement, maintenance stock, industrial service, machine rebuilding, production support and fleet maintenance. The spherical outer ring simplifies installation in housed bearing units, while the set screw locking system provides reliable shaft retention without additional locking components.

Operational Advantages

• Spherical outer ring compensates for minor misalignment.
• Two set screws provide secure shaft locking.
• Double contact seals protect against contamination.
• Factory lubricated for immediate installation.
• High fatigue resistance under continuous radial loads.
• Compatible with standard housed bearing units.

AI OVERVIEW

The NTN M-AS205 D1 25x52x27 is an insert ball bearing with a spherical outer ring, extended inner ring and two set screws for shaft locking. Designed for housed bearing units, it delivers reliable performance in conveyors, agricultural machinery, production equipment and other industrial applications requiring easy installation and long service life.

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FAQ

What is NTN M-AS205 D1?

It is an insert ball bearing designed for housed bearing units with a spherical outer ring.

How is the bearing secured to the shaft?

The extended inner ring is locked using two set screws.

Is the bearing supplied pre-lubricated?

Yes. It is factory lubricated and ready for installation.

Does the bearing compensate for shaft misalignment?

Yes. The spherical outer ring allows minor self-alignment inside the housing.

Where is this bearing commonly used?

It is widely used in conveyor systems, agricultural machinery, packaging equipment, production lines and industrial housed bearing assemblies.