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NTN ARP-3/4 Ultra-Class pillow block unit with set screw lock, 3/4 inch bore, and cast iron housing. Designed for general industrial conveyor and machinery applications.
MODEL ARP-3/4
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$61.42 Each
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Select Quantity
Brand Minimum Order Quantity: 2
Typically Ships in: 1 day
Returnable:No
A (in)
1.5000
B (in)
1.0039
Bearing Number
A-AR204-012D1
Bearing number
A-AR204-012D1
Bearing Type
Ball Bearing
d (in)
3/4
Dynamic Load Rating
3190 lbf
Dynamic load rating
3190 lbf
End Type
Open
End type
Open
Finish/Coating
Black oxide
H (in)
1-5/16
H1
0.5625 in
H2
2.5625 in
Housing Construction
1 Piece
Housing construction
1 Piece
Housing Material
Cast Iron
Housing material
Cast iron
Housing Number
P204D1V50
I.D.
0.75 in
J (in)
3-25/32
L (in)
5.0000
L1
1.6563 in
Locking Device
Set Screw
Locking device
Set screw
Lubrication
Relubricatable
Max Rotational Speed
5000 RPM
N (in)
0.4375
N1
0.7813 in
O.D.
1.8504 in
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Performance
Light Duty
S
0.2953 in
Seal Material
Nitrile Rubber
Seal material
Nitrile rubber
Seal Type
Contact
Seal type
Contact
Static Load Rating
1495 lbf
Static load rating
1495 lbf
Type
Pillow Block Unit
Width
1.0039 in
Specifications
| Mounted Unit Data Sheet | ||
|---|---|---|
| Ultra-Class Pillow Block High Base Narrow Inner Ring Set Screw Type | ||
| NTN Part Number | ARP-3/4 | |
| Bearing Insert # | A-AR204-012D1 | |
| Housing # | P204D1V50 | |
| Weight | N/A (lbs) / N/A (kg) | |
| 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 |
0.7500 (in) 1.3125 (in) 5.0000 (in) 3.7813 (in) 1.5000 (in) 0.4375 (in) 0.7813 (in) 0.5625 (in) 2.5625 (in) 1.6563 (in) 1.0039 (in) 0.2950 (in) 1/4-28UNF |
19.050 (mm) 33.338 (mm) 127.000 (mm) 96.044 (mm) 38.100 (mm) 11.113 (mm) 19.844 (mm) 14.288 (mm) 65.088 (mm) 42.069 (mm) 25.499 (mm) 7.493 (mm) 1/4-28UNF |
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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