Product Overview

The NMT NU 202 ECP is a single-row cylindrical roller bearing with NU design – featuring two integral flanges on the outer ring and no flanges on the inner ring. With a 15 mm bore, 35 mm outer diameter, and 11 mm width, this bearing is manufactured from high-quality bearing steel, equipped with a glass fibre reinforced polyamide 66 (PA66) cage (ECP) , and features CN radial clearance (normal group) . Specifically designed for high radial loads in combination with high speeds, it also features a separable design for easy mounting and maintenance.

 

The bearing offers a basic dynamic load rating of 12.5 kN and a static load rating of 10.2 kN. It achieves a reference speed of 22,000 r/min and a limiting speed of 26,000 r/min. The bearing weighs only 0.047 kg (47 g)  with an operating temperature range of -30°C to +90°C (up to +110°C for short periods).

 

Model Code Decoding – Understanding NMT NU 202 ECP

Code Meaning

NU Design code – outer ring with two integral flanges, inner ring without flanges, accommodates axial displacement in both directions

202 Size series designation – 15 mm bore, 35 mm OD, 11 mm width

EC Optimised internal design – accommodates more and/or larger rollers with improved roller end/flange contact for higher load capacity

P Glass fibre reinforced PA66 cage – roller-guided, injection moulded, lightweight, high strength, high speed capability

Core Value: The NU design, with two flanges on the outer ring and no flanges on the inner ring, allows axial displacement in both directions, making it particularly suitable for floating bearing arrangements. The ECP cage, made of glass fibre reinforced PA66, combines high strength with lightweight characteristics, providing excellent roller guidance accuracy at high speeds. The CN radial clearance (normal group) is suitable for most general applications. The separable design allows independent mounting of inner and outer rings, significantly simplifying assembly and maintenance. Logarithmically crowned rollers effectively optimise contact stress distribution between rollers and raceways, reducing edge stress concentration and extending bearing service life. The synergy of high radial load capacity, high speed performance, separable design, and optimised internal geometry makes this bearing the ideal precision bearing solution for high-radial-load high-speed rotating equipment.

 

Core Performance Advantages

1. High Radial Load Capacity – High Load in Compact Space

The line contact design of cylindrical roller bearings provides extremely high radial load carrying capacity. With a basic dynamic load rating of 12.5 kN and static load rating of 10.2 kN, this bearing offers radial load capacity far exceeding ball bearings of the same size.

 

2. High Speed Performance – 22,000 – 26,000 r/min

The low-friction characteristics of the ECP glass fibre reinforced PA66 cage, combined with optimised internal geometry, deliver a reference speed of 22,000 r/min and a limiting speed of 26,000 r/min.

 

3. Separable Design – Easy Installation and Maintenance

The bearing features a separable design – inner and outer rings can be mounted independently, significantly simplifying assembly and maintenance. This is particularly important in applications requiring frequent maintenance or component replacement.

 

4. Optimised Roller Profile – Extended Service Life

Logarithmically crowned rollers effectively optimise contact stress distribution between rollers and raceways, reducing edge stress concentration and extending bearing service life.

 

5. NU Design – Bidirectional Axial Displacement Accommodation

With two integral flanges on the outer ring and no flanges on the inner ring, this bearing accommodates axial displacement in both directions. This makes it particularly suitable as a floating bearing, effectively accommodating shaft thermal expansion and axial displacement.

 

6. Glass Fibre Reinforced PA66 Cage (ECP) – Speed and Durability Combined

The roller-guided glass fibre reinforced PA66 cage offers an excellent strength-to-weight ratio, low friction characteristics, and dimensional stability, providing superior guidance accuracy at high speeds while reducing centrifugal forces, friction, and heat generation.

 

7. CN Radial Clearance – Ideal for General Applications

CN radial clearance is normal clearance, suitable for most general applications, ensuring stable temperature performance and running accuracy under normal operating conditions.

 

8. Wide Operating Temperature Range

This bearing operates within a temperature range of -30°C to +90°C (up to +110°C for short periods), capable of adapting to various demanding environments from cold to high-temperature processing.

 

9. RoHS Compliant

This bearing is compliant with RoHS environmental standards, ensuring safe use even in regions with strict environmental regulations.

 

10. Clear Performance Specifications

 

Parameter Value

Bore d 15 mm

Outer Diameter D 35 mm

Width B 11 mm

Chamfer r₁,₂ min. 1.0 mm

Dynamic Load Rating C 12.5 kN

Static Load Rating C₀ 10.2 kN

Fatigue Load Limit Pu 1.22 kN

Reference Speed 22,000 r/min

Limiting Speed 26,000 r/min

Design Code NU (outer ring with two flanges, inner ring without)

Cage Material Glass Fibre Reinforced PA66 (ECP)

Radial Clearance CN (Normal)

Number of Rows 1

Seal Type Open

Precision Class P6

Weight 0.047 kg (47 g)

Temperature Range -30°C to +90°C (up to +110°C short term)

Typical Applications

The NMT NU 202 ECP, with its high radial load capacity, high speed performance, and separable design, covers an exceptionally wide range of high-end applications:

 

Traction motors – high radial load and high speed combinations

 

Electric motors – general industrial motors, servo motors

 

Gearboxes – industrial gearboxes, reducers

 

Floating bearing arrangements – accommodating shaft thermal expansion and bidirectional axial displacement

 

Pumps and Compressors – high-speed rotating machinery

 

Industrial Fans – high-speed, high-radial-load applications

 

Machine Tool Spindles – high-precision rotating equipment

 

Material Handling Equipment – conveyors, hoists

 

Important Installation Notes

✅ This bearing features NU design (outer ring with two flanges, inner ring without), allowing axial displacement in both directions. Ensure correct floating bearing configuration during installation.

 

✅ This bearing features a separable design – inner and outer rings can be mounted independently, significantly simplifying assembly and maintenance.

 

✅ Ensure shaft and housing fits comply with P0/P6 precision grade requirements (bore 15 mm, OD 35 mm).

 

✅ This bearing is unsealed (open design) – select appropriate lubrication method based on application – grease or oil lubrication.

 

✅ This bearing features CN (normal) radial clearance, suitable for most general applications.

 

⚠️ Cylindrical roller bearings primarily accommodate radial loads – axial load capacity is limited.

 

⚠️ This bearing has no lubrication groove and no lubrication holes – lubrication must be supplied through an external lubrication system.

 

⚠️ The ECP cage is made of glass fibre reinforced PA66 – avoid contact with sharp tools during installation to prevent cage damage.

 

NMT Quality Commitment

Japan NMT (Enmutī) has deep expertise in the precision bearing industry, with breakthroughs in material purification, process refinement, scenario customisation, and intelligent upgrading, transforming precision bearings into core solutions addressing pain points across multiple industries. The NMT NU 202 ECP bearing is manufactured to strict Japanese quality standards – from ring material (high-purity bearing steel), rollers (logarithmically crowned), to superfinishing processes. The combination of NU design, ECP glass fibre reinforced PA66 cage, CN radial clearance, high radial load capacity, high speed performance, and separable design makes this bearing the flagship precision bearing in the NMT cylindrical roller bearing series – offering the perfect balance of high radial load, high speed, and precision performance.

 

Choose NMT NU 202 ECP for:

 

✅ NU design – bidirectional axial displacement accommodation, ideal for floating applications

 

✅ ECP glass fibre reinforced PA66 cage – speed and durability combined

 

✅ 12.5 kN high radial load capacity – high load in compact space

 

✅ 26,000 r/min high speed performance – industry-leading

 

✅ Separable design – easy installation and maintenance

 

✅ Logarithmically crowned rollers – extended service life

 

✅ CN radial clearance – ideal for general applications

 

✅ Wide temperature range – -30°C to +110°C

 

✅ RoHS compliant

 

✅ Japanese precision manufacturing quality