Thrust Roller and Cage Assemblies

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

NTN is a globally recognized leader in the design and manufacturing of high-performance rolling bearings, delivering innovative solutions for industrial machinery, automotive systems, and precision equipment. Among its extensive product portfolio, NTN’s **Needle Roller Bearings, Thrust Bearings, and Thrust Roller & Cage Assemblies** stand out for their exceptional load capacity, compact design, and reliability in high-stress environments. These components are engineered to meet the rigorous demands of modern applications, ensuring durability, reduced friction, and enhanced operational efficiency.

### **Technical Features & Design Advantages**

#### **1. Needle Roller Bearings**
NTN’s **Needle Roller Bearings** are designed with slender, cylindrical rollers that provide a high load-carrying capacity within a minimal radial space. Their compact design makes them ideal for applications where space constraints are critical, such as automotive transmissions, gearboxes, and industrial pumps. Key features include:
– **High Radial Load Capacity** – Optimized roller geometry ensures superior load distribution, reducing stress concentrations.
– **Low Friction & High-Speed Capability** – Precision-ground rollers and cages minimize rotational resistance, enhancing efficiency.
– **Versatile Configurations** – Available in drawn cup, caged, and full-complement designs for various load and speed requirements.

#### **2. Thrust Bearings**
NTN’s **Thrust Bearings** are engineered to handle **axial loads** in one or both directions, making them essential for applications like automotive clutches, steering systems, and heavy machinery. Their robust construction includes:
– **High Axial Load Support** – Designed with flat or spherical washers to accommodate misalignment and heavy thrust forces.
– **Low Profile & Space Efficiency** – Ideal for compact assemblies where height restrictions exist.
– **Heat-Treated Components** – Hardened raceways and rollers enhance wear resistance and longevity.

#### **3. Thrust Roller & Cage Assemblies**
For applications requiring **high axial load capacity with minimal friction**, NTN’s **Thrust Roller & Cage Assemblies** provide an optimized solution. These assemblies consist of precision rollers retained in a robust cage, ensuring smooth operation under heavy loads. Benefits include:
– **Reduced Sliding Friction** – Rollers replace sliding contact, minimizing heat generation and wear.
– **Enhanced Durability** – High-grade steel and advanced heat treatment extend service life.
– **Customizable Designs** – Available in various sizes and configurations to suit specific application needs.

### **Typical Applications**
NTN’s needle roller and thrust bearings are widely used across industries, including:
– **Automotive Systems:** Transmissions, differentials, clutch release mechanisms, and electric power steering.
– **Industrial Machinery:** Gearboxes, pumps, compressors, and construction equipment.
– **Precision Equipment:** Robotics, medical devices, and aerospace components.

By combining **advanced materials, precision engineering, and rigorous testing**, NTN ensures that its bearings deliver **reliable performance, extended service life, and reduced maintenance costs**—making them the preferred choice for engineers and manufacturers worldwide. Whether in high-speed automotive applications or heavy-duty industrial machinery, NTN’s thrust and needle roller bearings provide the strength and efficiency needed for peak performance.

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Part Number Dc1 Dc Dw (0/-0.010) Ea Eb Mass
K81214T2
70.000 mm
105.000 mm
11.000 mm
98.400 mm
75.000 mm
K81215T2
75.000 mm
110.000 mm
11.000 mm
103.700 mm
80.100 mm
K81216T2
80.000 mm
115.000 mm
11.000 mm
108.400 mm
84.800 mm
K81217
85.000 mm
125.000 mm
12.000 mm
116.900 mm
92.200 mm
K81218
90.000 mm
135.000 mm
14.000 mm
126.700 mm
97.900 mm
K81220
100.000 mm
150.000 mm
15.000 mm
140.000 mm
109.200 mm
K81222
110.000 mm
160.000 mm
15.000 mm
150.000 mm
119.200 mm
K81224
120.000 mm
170.000 mm
15.000 mm
160.000 mm
129.200 mm
K81226
130.000 mm
190.000 mm
19.000 mm
179.000 mm
140.100 mm
K81228
140.000 mm
200.000 mm
19.000 mm
189.000 mm
150.100 mm
K87408
40.000 mm
90.000 mm
6.500 mm
87.000 mm
46.000 mm
K87409
45.000 mm
100.000 mm
7.000 mm
96.000 mm
53.000 mm
K81210T2
50.000 mm
78.000 mm
9.000 mm
73.100 mm
53.700 mm
K87410
50.000 mm
110.000 mm
8.000 mm
106.000 mm
56.000 mm
K81211T2
55.000 mm
90.000 mm
11.000 mm
83.400 mm
60.100 mm
K87411
55.000 mm
120.000 mm
8.000 mm
116.000 mm
66.000 mm
K81212T2
60.000 mm
95.000 mm
11.000 mm
88.400 mm
64.900 mm
K87412
60.000 mm
130.000 mm
9.000 mm
126.000 mm
70.000 mm
K81213T2
65.000 mm
100.000 mm
11.000 mm
93.300 mm
69.900 mm
K87413
65.000 mm
140.000 mm
10.000 mm
136.000 mm
74.000 mm