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Heavy Duty Needle Roller Bearings (Machined)
Heavy Duty Needle Roller Bearings (Machined) offer high load capacity in compact form. With precision-machined outer rings and tightly packed needle rollers, they are ideal for demanding applications where space is limited and performance is critical.
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Total 475 Results
Part Number
System of Measurement
Construction
Seal Type
Inner Ring
Series
Bore Dia
Outer Dia
Width
Dynamic Radial Load
Static Radial Load
Max Speed
Weight
NKI65/25-XL
Metric
Single Row
Open
Yes
With Inner Ring
65 mm
90 mm
25 mm
13500 lbf
22500 lbf
6300 rpm
467 g
NKI65/35-XL
Metric
Single Row
Open
Yes
With Inner Ring
65 mm
90 mm
35 mm
19125 lbf
35100 lbf
6300 rpm
659 g
RNAO65X85X30-XL
Metric
Single Row
Open
No
Without Inner Ring
65 mm
85 mm
30 mm
14400 lbf
27675 lbf
7100 rpm
464 g
NK68/25-XL
Metric
Single Row
Open
No
Without Inner Ring
68 mm
82 mm
25 mm
11138 lbf
20025 lbf
6800 rpm
241 g
NK68/35-XL
Metric
Single Row
Open
No
Without Inner Ring
68 mm
82 mm
35 mm
15750 lbf
31275 lbf
6800 rpm
338 g
RNA4912-XL
Metric
Single Row
Open
No
Without Inner Ring
68 mm
85 mm
25 mm
15300 lbf
24300 lbf
6700 rpm
275 g
RNA6912-ZW-XL
Metric
Double Row
Open
No
Without Inner Ring
68 mm
85 mm
45 mm
23850 lbf
42975 lbf
6700 rpm
488 g
NA4914-XL
Metric
Single Row
Open
Yes
With Inner Ring
70 mm
100 mm
30 mm
21375 lbf
35100 lbf
5700 rpm
728 g
NA6914-ZW-XL
Metric
Double Row
Open
Yes
With Inner Ring
70 mm
100 mm
54 mm
32625 lbf
59625 lbf
5700 rpm
1340 g
NAO70X100X30-XL
Metric
Single Row
Open
Yes
With Inner Ring
70 mm
100 mm
30 mm
18000 lbf
39600 lbf
5800 rpm
850 g
NKS70-XL
Metric
Single Row
Open
No
Without Inner Ring
70 mm
90 mm
28 mm
17325 lbf
25425 lbf
6400 rpm
380 g
NK70/25-XL
Metric
Single Row
Open
No
Without Inner Ring
70 mm
85 mm
25 mm
11250 lbf
20700 lbf
6600 rpm
260 g
NK70/35-XL
Metric
Single Row
Open
No
Without Inner Ring
70 mm
85 mm
35 mm
15975 lbf
32400 lbf
6600 rpm
370 g
NKI70/25-XL
Metric
Single Row
Open
Yes
With Inner Ring
70 mm
95 mm
25 mm
14175 lbf
26775 lbf
5800 rpm
521 g
High Load Capacity and Compact Design
Heavy Duty Needle Roller Bearings (Machined) are renowned for their impressive load-carrying capabilities within a small cross-section. This unique design allows engineers to optimize space without sacrificing performance.
The numerous, thin needle bearing needles or needle rollers maximize the contact area between the rolling elements and the raceways, enabling these bearings to support substantial radial loads far exceeding what conventional bearings of similar size might handle.
This makes them an ideal choice for applications where space is severely limited but high performance and robust support are essential, such as in automotive transmissions, heavy-duty gearboxes, agricultural machinery, and various industrial equipment.
The numerous, thin needle bearing needles or needle rollers maximize the contact area between the rolling elements and the raceways, enabling these bearings to support substantial radial loads far exceeding what conventional bearings of similar size might handle.
This makes them an ideal choice for applications where space is severely limited but high performance and robust support are essential, such as in automotive transmissions, heavy-duty gearboxes, agricultural machinery, and various industrial equipment.
Wide Range of Needle Roller Bearing Sizes
We offer one of the most comprehensive selections of needle roller bearing sizes in the market. Whether you need compact bearings for tight assemblies or heavy duty bearings for industrial equipment, TFL Bearings has the right product. Our catalog includes drawn cup needle bearings, sealed needle bearings, and needle roller and cage assemblies, ensuring compatibility with various applications.
For easy selection, we provide detailed needle bearing size charts and roller bearing dimensions to help engineers match bearings to their load and space requirements. With decades of expertise, our team can also support custom solutions for non-standard bearing dimensions.
For easy selection, we provide detailed needle bearing size charts and roller bearing dimensions to help engineers match bearings to their load and space requirements. With decades of expertise, our team can also support custom solutions for non-standard bearing dimensions.
Optimized Cage Design for Durability and Speed
The bearing cage is a crucial part of any needle roller and cage assembly. At TFL Bearings, we use high-strength materials and precise molding techniques to create cages that maintain optimal roller alignment and minimize friction during high-speed operation. This results in reduced wear, quieter performance, and greater reliability under continuous operation.
We offer both caged roller bearings and needle cage bearings, depending on your application’s speed, lubrication, and load demands. The right cage design helps prevent roller skewing, reduces heat generation, and improves operating life. It is especially vital in compact machines or automated systems where failure is not an option.
We offer both caged roller bearings and needle cage bearings, depending on your application’s speed, lubrication, and load demands. The right cage design helps prevent roller skewing, reduces heat generation, and improves operating life. It is especially vital in compact machines or automated systems where failure is not an option.
FREQUENTLY ASKED QUESTIONS
What are Heavy Duty Needle Roller Bearings (Machined) primarily used for?
Heavy Duty Machined Needle Roller Bearings are primarily utilized in demanding industrial and automotive applications. This includes, but is not limited to, high-load sections of automotive transmissions, robust gearboxes, heavy machinery like construction equipment, agricultural machinery, and various industrial pumps and compressors. Their design makes them ideal for scenarios requiring high load capacity, precise rotation, and compact installation space.
How do machined needle roller bearings differ fundamentally from drawn cup needle bearings?
The fundamental difference lies in their outer ring construction. Machined needle roller bearings feature a solid, precisely machined outer ring, which provides superior rigidity, higher radial load capacity, and better running accuracy. In contrast, drawn cup needle bearings have a thin, pressed outer shell. While more economical for certain applications, the drawn cup design offers less rigidity and a lower load capacity compared to the machined variant, making the machined bearings better suited for heavy duty and high-precision applications.
How do I interpret a needle roller bearing size chart?
You can find comprehensive information on roller bearing dimensions, needle roller bearing dimensions, and various size charts directly on our TFL Bearings website. We provide detailed product specifications for each heavy-duty machined needle roller bearing type, including bore diameter, outer diameter, width, and dynamic/static load ratings.
Additionally, you can download our full needle roller bearing dimensions chart or roller bearing size chart from our resources section. If you require further assistance or custom roller bearing dimensions sizes, our technical support team is readily available to provide expert guidance.
Additionally, you can download our full needle roller bearing dimensions chart or roller bearing size chart from our resources section. If you require further assistance or custom roller bearing dimensions sizes, our technical support team is readily available to provide expert guidance.