NTN logo – NA4911S

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ITEM NUMBER

NA4911S

Clearance-Adjustable Needle Roller Bearing w/ Inner Ring

d55,000 mmBore
D80,000 mmOutside diameter
B25,000 mmWidth
Verified by Cat Son before quotationPart number · clearance · precision
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TECHNICAL DATA

Specifications for NA4911S

Units

Technical Specifications

Type
Clearance-Adjustable Needle Roller Bearing
Bore Type
Round
Material
High Carbon Chrome Steel
Cage Material
Steel
Limiting Speed - Oil
6500 RPM
Limiting Speed - Grease
4300 RPM
Precision
ISO Class 0
Configuration
One
Enclosure
Open
Bearing Design
w/ Inner Ring
Oil Hole
w/ Oil Hole
Radial Internal Clearance
CN
Static Load Rating
65500 N
Dynamic Load Rating
33000 N
Weight
0.382 kg
Operating Temperature Range
-40 to 120 ºC

Dimensional Specifications

d
55.000 mm
D
80.000 mm
F
63.000 mm
B
25.000 mm
r
1.000 mm
da min
60.000 mm
Da max
70.000 mm
ras max
1.000 mm
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