Washer

**NTN Needle Roller Thrust Bearings & Washers: Precision Performance for Demanding Applications**

NTN Corporation, a global leader in bearing technology, delivers high-performance **Needle Roller Thrust Bearings and Washers** engineered to withstand extreme axial loads while maintaining compact, space-saving designs. These precision components are critical in applications where high load capacity, durability, and minimal friction are essential—particularly in automotive transmissions, industrial machinery, and heavy-duty equipment. By leveraging advanced materials, optimized geometries, and rigorous manufacturing standards, NTN’s needle roller thrust bearings ensure reliable operation even in the most demanding environments.

### **Technical Features & Design Advantages**
NTN’s **Needle Roller Thrust Bearings** incorporate a robust construction featuring needle rollers arranged in a flat or grooved washer configuration. Key design elements include:

– **High Load Capacity:** The use of small-diameter needle rollers maximizes the number of rolling elements, distributing axial loads evenly across the bearing surface. This design excels in applications with limited radial space but high thrust load requirements.
– **Low Friction & Smooth Operation:** Precision-ground rollers and hardened raceways minimize rotational resistance, reducing heat generation and energy loss—critical for high-speed automotive and industrial systems.
– **Thin Section Design:** The compact profile allows integration into tightly constrained assemblies, such as gearboxes, clutch systems, and hydraulic pumps, without sacrificing performance.
– **Durable Materials & Coatings:** NTN utilizes high-carbon chromium steel and specialized surface treatments (e.g., phosphate or black oxide coatings) to enhance wear resistance and corrosion protection, extending service life.
– **Washer Variants:** Complementary thrust washers (flat or with locating lips) provide additional support, ensuring proper alignment and load distribution in assemblies like planetary gear sets or camshaft thrust plates.

### **Performance Benefits**
NTN’s thrust bearings are engineered to outperform conventional ball thrust bearings in scenarios requiring:
– **Higher load ratings** in confined spaces.
– **Improved stiffness** for precision motion control.
– **Reduced maintenance needs** due to hardened surfaces and optimized lubrication retention.

### **Typical Applications**
1. **Automotive Systems:**
– Transmissions (thrust washers for gear positioning)
– Clutch release mechanisms
– Steering column pivot supports

2. **Industrial Machinery:**
– Construction equipment (pump drives, excavator slew rings)
– Machine tool spindles and linear actuators
– Agricultural gearboxes

3. **Precision Equipment:**
– Robotics (axial load support in rotary joints)
– Aerospace actuators

### **Why Choose NTN?**
With decades of expertise in needle roller bearing technology, NTN combines rigorous testing, advanced simulation tools, and global manufacturing capabilities to deliver components that meet **ISO, JIS, and OEM-specific standards**. Whether for high-speed automotive drivetrains or heavy industrial machinery, NTN’s thrust bearings and washers provide unmatched reliability, efficiency, and longevity.

For engineers seeking a balance of **compact design, high axial load capacity, and durability**, NTN’s needle roller thrust solutions offer a proven advantage in performance-critical applications.

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Part Number Dp1 Dp S r1 Mass
AS1101
12.000 mm
26.000 mm
1.000 mm
N/A
0.003 kg
AS1117
85.000 mm
110.000 mm
1.000 mm
N/A
0.030 kg
AS1102
15.000 mm
28.000 mm
1.000 mm
N/A
0.004 kg
AS1118
90.000 mm
120.000 mm
1.000 mm
N/A
0.039 kg
AS1103
17.000 mm
30.000 mm
1.000 mm
N/A
0.004 kg
AS1120
100.000 mm
135.000 mm
1.000 mm
N/A
0.051 kg
AS1104
20.000 mm
35.000 mm
1.000 mm
N/A
0.005 kg
AS1105
25.000 mm
42.000 mm
1.000 mm
N/A
0.007 kg
AS1106
30.000 mm
47.000 mm
1.000 mm
N/A
0.008 kg
AS1107
35.000 mm
52.000 mm
1.000 mm
N/A
0.009 kg
AS1108
40.000 mm
60.000 mm
1.000 mm
N/A
0.012 kg
AS1109
45.000 mm
65.000 mm
1.000 mm
N/A
0.014 kg
AS1110
50.000 mm
70.000 mm
1.000 mm
N/A
0.015 kg
AS1111
55.000 mm
78.000 mm
1.000 mm
N/A
0.019 kg
AS1112
60.000 mm
85.000 mm
1.000 mm
N/A
0.022 kg