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NTN UELFU-1.1/4S ULK 4-bolt square flanged unit with a 1-1/4 in (31.8 mm) bore, eccentric collar lock, and cast iron housing. This ultra-class mounted unit is designed for heavy-duty industrial applications requiring secure shaft locking and easy installation.
MODEL UELFU-1.1/4S
$110.39 Each
Prices are subject to change
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A (in)
1.3125
A0
1.9688 in
A1
0.6250 in
A2
0.7813 in
B1
1.9055 in
Bearing Number
A-UEL206-104D1
Bearing number
A-UEL206-104D1
Bearing Type
Ball Bearing
d (in)
1 1/4
Dynamic Load Rating
4400 lbf
Dynamic load rating
4400 lbf
End Type
Open
End type
Open
F (in)
0.1811
Finish/Coating
Black oxide
Housing Construction
1 Piece
Housing construction
1 Piece
Housing Material
Cast Iron
Housing material
Cast iron
Housing Number
FU206D1V50
I.D.
1.25 in
J (in)
3.2500
L (in)
4.2813
Locking Device
Eccentric Locking Collar
Locking device
Eccentric locking collar
Lubrication
Relubricatable
Max Rotational Speed
4900 RPM
Max Tightening Torque
86 lb·in
N (in)
0.4531
O.D.
2.4409 in
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Performance
Light Duty
S
0.7205 in
Seal Material
Nitrile Rubber
Seal material
Nitrile rubber
Seal Type
Contact
Seal type
Contact
Static Load Rating
2540 lbf
Static load rating
2540 lbf
Type
4-Bolt Square Flanged Unit
Width
1.9055 in
Technical Specifications
Type | 4-Bolt Square Flanged Unit |
Bearing Type | Ball Bearing |
Locking Device | Eccentric Locking Collar |
Seal Type | Contact |
Seal Material | Nitrile Rubber |
Bearing Number | A-UEL206-104D1 |
Housing Number | FU206D1V50 |
Housing Material | Cast Iron |
Housing Construction | 1 Piece |
End Type | Open |
Finish/Coating | Black Oxide |
Performance | Light Duty |
Dynamic Load Rating | 4400 lbf19500 N19.50 kN |
Static Load Rating | 2540 lbf11300 N11.30 kN |
Max Tightening Torque | 86 lb·in |
Rotational Speed [Max] | 4900 RPM |
Weight | 2.932 lb1.330 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 1.25 in31.750 mm |
L | 4.2813 in108.7 mm |
J | 3.2500 in82.6 mm |
A | 1.3125 in33.3 mm |
A0 | 1.9688 in50.000 mm |
A1 | 0.6250 in15.9 mm |
A2 | 0.7813 in19.8 mm |
N | 0.4531 in11.5 mm |
B1 | 1.9055 in48.400 mm |
S | 0.7205 in18.300 mm |
F | 0.1811 in4.600 mm |
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
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