Complex Bearing w/ Inner Ring

**NTN Needle Roller Bearings: Precision, Durability, and Compact Performance for Demanding Applications**

NTN is a globally recognized leader in bearing technology, and its **Needle Roller Bearings (Complex Bearings with Inner Ring)** exemplify the company’s commitment to precision engineering, durability, and space-saving design. These specialized bearings are engineered to deliver exceptional load capacity, reduced friction, and long service life in compact assemblies—making them indispensable for high-performance automotive systems, industrial machinery, and precision equipment where space constraints and reliability are critical.

### **Technical Features & Design Advantages**
NTN’s **Needle Roller Bearings (Complex Bearings with Inner Ring)** integrate a hardened inner ring with precision-ground needle rollers and a robust outer ring or housing, ensuring optimal load distribution and smooth rotational performance. Key features include:

– **High Load Capacity:** The needle rollers provide a large contact area, enabling superior radial load handling compared to conventional ball bearings—ideal for applications with heavy dynamic or shock loads.
– **Compact & Lightweight Design:** By eliminating the need for a separate inner ring in some configurations, these bearings minimize space requirements while maintaining strength, making them perfect for tight installations in transmissions, engines, and gearboxes.
– **Low Friction & High-Speed Capability:** Precision-ground rollers and optimized surface finishes reduce friction and heat generation, supporting high rotational speeds with minimal energy loss.
– **Enhanced Durability:** Advanced heat treatment processes and high-quality steel extend bearing life, even in harsh environments with contaminants or misalignment challenges.
– **Versatile Sealing Options:** NTN offers shielded or sealed variants to protect against debris and retain lubrication, ensuring consistent performance in dirty or high-temperature conditions.

### **Performance Benefits for Critical Applications**
NTN’s needle roller bearings excel in applications where reliability, compactness, and load-bearing efficiency are paramount:

– **Automotive Systems:** Widely used in transmissions, differentials, clutch release mechanisms, and engine components (e.g., rocker arm pivots), these bearings reduce weight and improve fuel efficiency without sacrificing durability.
– **Industrial Machinery:** Ideal for construction equipment, agricultural machinery, and hydraulic pumps, where shock resistance and space optimization are crucial.
– **Precision Equipment:** Employed in robotics, printing presses, and medical devices, where smooth motion control and minimal maintenance are required.

### **Why Choose NTN?**
With decades of expertise in bearing innovation, NTN ensures rigorous quality control, advanced material science, and custom engineering solutions tailored to specific operational demands. Whether for OEM automotive designs or heavy-duty industrial applications, NTN’s **Needle Roller Bearings (Complex Bearings with Inner Ring)** provide unmatched performance, longevity, and efficiency—driving productivity across industries.

For engineers and designers seeking a reliable, high-capacity bearing solution in constrained spaces, NTN’s needle roller technology delivers the perfect balance of strength, precision, and compact design.

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Part Number d dw D D1 F Mass
NKXR35T2+1R30X35X20
30.000 mm
35.000 mm
47.000 mm
52.000 mm
35.000 mm
NKXR35T2Z+1R30X35X20
30.000 mm
35.000 mm
47.000 mm
53.000 mm
35.000 mm
NKXR40+1R35X40X20
35.000 mm
40.000 mm
52.000 mm
60.000 mm
40.000 mm
NKXR40Z+1R35X40X20
35.000 mm
40.000 mm
52.000 mm
61.000 mm
40.000 mm
NKXR45+1R40X45X20
40.000 mm
45.000 mm
58.000 mm
65.000 mm
45.000 mm
NKXR45Z+1R40X45X20
40.000 mm
45.000 mm
58.000 mm
66.500 mm
45.000 mm
NKXR15T2+1R12X15X16
12.000 mm
15.000 mm
24.000 mm
28.000 mm
15.000 mm
NKXR50+1R45X50X25
45.000 mm
50.000 mm
62.000 mm
70.000 mm
50.000 mm
NKXR15T2Z+1R12X15X16
12.000 mm
15.000 mm
24.000 mm
29.000 mm
15.000 mm
NKXR50Z+1R45X50X25
45.000 mm
50.000 mm
62.000 mm
71.500 mm
50.000 mm
NKXR17T2+1R14X17X17
14.000 mm
17.000 mm
26.000 mm
30.000 mm
17.000 mm
NKXR17T2Z+1R14X17X17
14.000 mm
17.000 mm
26.000 mm
31.000 mm
17.000 mm
NKXR20T2+1R17X20X20
17.000 mm
20.000 mm
30.000 mm
35.000 mm
20.000 mm
NKXR20T2Z+1R17X20X20
17.000 mm
20.000 mm
30.000 mm
36.000 mm
20.000 mm
NKXR25T2+1R20X25X20
20.000 mm
25.000 mm
37.000 mm
42.000 mm
25.000 mm
NKXR25T2Z+1R20X25X20
20.000 mm
25.000 mm
37.000 mm
43.000 mm
25.000 mm
NKXR30T2+1R25X30X20
25.000 mm
30.000 mm
42.000 mm
47.000 mm
30.000 mm
NKXR30T2Z+1R25X30X20
25.000 mm
30.000 mm
42.000 mm
48.000 mm
30.000 mm
NKX50+1R45X50X25
45.000 mm
50.000 mm
62.000 mm
70.000 mm
50.000 mm
0.373 kg
NKX50Z+1R45X50X25
45.000 mm
50.000 mm
62.000 mm
71.500 mm
50.000 mm
0.389 kg