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NTN ARP-1.1/4 Ultra-Class pillow block unit with a 1-1/4 inch bore, set screw lock, and cast iron housing. This high-base mounted unit is designed for general industrial applications requiring reliable shaft support.
MODEL ARP-1.1/4
$83.95 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable:No
A (in)
1.8750
B (in)
1.3780
Bearing Number
A-AR207-104D1
Bearing number
A-AR207-104D1
Bearing Type
Ball Bearing
d (in)
1 1/4
Dynamic Load Rating
5800 lbf
Dynamic load rating
5800 lbf
End Type
Open
End type
Open
F (in)
0.1614
Finish/Coating
Black oxide
H (in)
1-7/8
H1
0.7188 in
H2
3.6563 in
Housing Construction
1 Piece
Housing construction
1 Piece
Housing Material
Cast Iron
Housing material
Cast iron
Housing Number
P207D1V50
I.D.
1.25 in
J (in)
5-1/8
L (in)
6.5625
L1
2.1250 in
Locking Device
Set Screw
Locking device
Set screw
Lubrication
Relubricatable
Max Rotational Speed
4200 RPM
N (in)
0.5625
N1
0.9688 in
O.D.
2.8346 in
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Performance
Light Duty
S
0.3740 in
Seal Material
Nitrile Rubber
Seal material
Nitrile rubber
Seal Type
Contact
Seal type
Contact
Static Load Rating
3450 lbf
Static load rating
3450 lbf
Type
Pillow Block Unit
Width
1.378 in
Specifications
| Mounted Unit Data Sheet | ||
|---|---|---|
| Ultra-Class Pillow Block High Base Narrow Inner Ring Set Screw Type | ||
| NTN Part Number | ARP-1 | |
| Bearing Insert # | A-AR205-100D1 | |
| Housing # | P205D1V50 | |
| Dimensions | Features/Options | ||||
|---|---|---|---|---|---|
| Dimension | Imperial | Metric | Option | Code | Description |
| Bore d H L J A N N1 H1 H2 L1 B S Lube Hole of Housing | 1.0000 (in) 1.4375 (in) 5.5000 (in) 4.1250 (in) 1.5000 (in) 0.4375 (in) 0.8125 (in) 0.5938 (in) 2.7813 (in) 1.6563 (in) 1.0630 (in) 0.2950 (in) 1/8-27NPT | 25.400 (mm) 36.513 (mm) 139.700 (mm) 104.775 (mm) 38.100 (mm) 11.113 (mm) 20.638 (mm) 15.081 (mm) 70.644 (mm) 42.069 (mm) 27.000 (mm) 7.493 (mm) 1/8-27NPT | Bearing Insert | AR | Narrow inner ring, set screw locking, nylon cage |
| Basic Load Ratings | Limiting Speeds | ||||
|---|---|---|---|---|---|
| Static Dynamic | 0 (N) 0 (N) | 0 (N) 0 (N) | Oil Seals Grease | N/A N/A N/A | |
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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