Needle Roller and Cage Assemblies

**NTN Needle Roller Bearings & Needle Roller and Cage Assemblies: Precision Performance for Demanding Applications**

NTN is a global leader in bearing technology, renowned for its high-performance needle roller bearings and needle roller and cage assemblies. These precision-engineered components are designed to deliver exceptional load capacity, durability, and efficiency in compact spaces, making them indispensable in industrial machinery, automotive systems, and precision equipment.

### **Technical Features & Design Advantages**
NTN’s needle roller bearings and cage assemblies are optimized for applications requiring high radial load support with minimal radial cross-section. Key features include:

– **High Load Capacity:** Despite their compact design, needle rollers provide a large load-bearing surface, enabling superior radial load handling compared to conventional ball bearings.
– **Space-Saving Design:** The slim profile reduces overall assembly size, making them ideal for applications with strict space constraints.
– **Precision Cage Guidance:** High-quality cages (typically steel or polymer) ensure smooth roller movement, reducing friction and wear while maintaining proper alignment.
– **Versatile Configurations:** Available in various designs, including drawn cup, solid, and open types, with options for sealed or open variants to suit different lubrication and contamination conditions.
– **Enhanced Durability:** Advanced heat treatment and surface finishing processes extend service life, even under high-speed or heavy-load conditions.

### **Performance Advantages**
NTN’s needle roller solutions excel in demanding environments due to:

– **Reduced Friction & Heat Generation:** Optimized roller geometry and cage design minimize energy loss, improving efficiency and reducing operating temperatures.
– **High-Speed Capability:** Precision balancing and low-mass rollers allow stable performance at elevated speeds.
– **Reliability in Harsh Conditions:** Resistant to shock loads, misalignment, and contamination, ensuring consistent operation in industrial and automotive settings.

### **Typical Applications**
These bearings are widely used in:

– **Automotive Systems:** Transmission components (gearboxes, differentials), engine accessories (rocker arms, cam followers), and steering mechanisms.
– **Industrial Machinery:** Printing presses, textile equipment, agricultural machinery, and construction gear where compact, high-load solutions are critical.
– **Precision Equipment:** Robotics, medical devices, and aerospace actuators requiring lightweight, high-rigidity bearing solutions.

By combining advanced engineering with rigorous quality control, NTN’s needle roller bearings and cage assemblies provide unmatched performance, reliability, and longevity—ensuring optimal functionality in the most challenging applications. Whether enhancing automotive efficiency or supporting heavy industrial loads, NTN delivers precision you can trust.

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Part Number Fw Ew Bc Mass
KMJ75X81X20
75.000 mm
81.000 mm
20.000 mm
0.064 kg
KMJ85X92X20
85.000 mm
92.000 mm
20.000 mm
0.083 kg
KR21X25X17
21.000 mm
25.000 mm
17.000 mm
0.012 kg
KV100X107X21S
100.000 mm
107.000 mm
21.000 mm
0.120 kg
KV105X112X20.8X1S
105.000 mm
112.000 mm
20.800 mm
KV105X113X29.8X1S
105.000 mm
113.000 mm
29.800 mm
KV12X17X17.8XS
12.000 mm
17.000 mm
18.000 mm
0.008 kg
KMJ15X21X21X1
15.000 mm
21.000 mm
21.000 mm
KMJ16X22X13
16.000 mm
22.000 mm
13.000 mm
0.011 kg
KMJ16X22X16
16.000 mm
22.000 mm
16.000 mm
0.014 kg
KMJ18X24X17S
18.000 mm
24.000 mm
17.000 mm
0.014 kg
KMJ18X24X17SV1
18.000 mm
24.000 mm
17.000 mm
0.014 kg
KMJ20X26X13
20.000 mm
26.000 mm
13.000 mm
0.012 kg
KMJ20X26X13.8X1S
20.000 mm
26.000 mm
14.000 mm
0.013 kg
KMJ20X26X17S
20.000 mm
26.000 mm
17.000 mm
0.016 kg
KMJ20X26X20
20.000 mm
26.000 mm
20.000 mm
0.019 kg
KMJ20X26X20S
20.000 mm
26.000 mm
20.000 mm
0.019 kg
KMJ20X28X16.8XS
20.000 mm
28.000 mm
17.000 mm
0.022 kg
KMJ20X28X19.8X4S
20.000 mm
28.000 mm
20.000 mm
0.026 kg
KMJ21X25X12.8X1S
21.000 mm
25.000 mm
13.000 mm
0.008 kg
KMJ22X29X16
22.000 mm
29.000 mm
16.000 mm
0.022 kg
KMJ22X30X17.3X2S
22.000 mm
30.000 mm
17.500 mm
0.024 kg
KMJ22X30X23.8X3S
22.000 mm
30.000 mm
24.000 mm
0.035 kg
KMJ23X27X12.8X1S
23.000 mm
27.000 mm
13.000 mm
0.009 kg