Sealmaster NP-28C

Housing Base

Solid

Rolling Element

Ball Bearing

Bore Shape

Straight

Overall Length (in)

7.5

Overall Height (in)

4.25

Overall Width (in)

2.13

Base Width (in)

2.13

Housing Construction

One Piece

Bolt Size (in)

1/2

Outer Ring Land Profile

Standard

Misalignment Type

Static Only

Bore Size - Inch

1.75

Housing Color

Black

Base to Center Height (in)

2.13

Foot Height (in)

0.69

Cage Material

PPS - Polyphenylene Sulfide

Length Through Bore (in)

1.938

Housing Type (Product Selection)

Pillow Block, Two Bolt

Seal Type (Product Selection)

Single Lip Contact Seal

Housing Style

Pillow Block

Setscrew Torque (in-lbs)

125-165

Ability to Relubricate

Yes

Inner Race Heat Treat Method

Zone-Hardened

Radial Clearance

Standard

Inner Ring Outside Diameter (in)

2.063

Bearing Insert Finish

Black Oxide

Bearing Insert Material

52100 Bearing Steel

Lubricant

Lithium Complex NLGI 2 Grease

Bolt Spacing Min (in)

5.44

Dynamic Load Rating (lb)

7,901

Size Code

2-111

Static Load Rating (lb)

5,139

Max Operating Temperature (F)

220

Vibration Frequency Outer Ring Defect

0.0673

Base Length (in)

7.50

Maximum Speed (RPM)

3800

Misalignment Capability

±2.0° Misalignment - Static Only

Bolt Spacing Max (in)

6.06

Centerline to Outermost Bearing Face (in)

1.188

Housing Material

Cast Iron

Vibration Frequency Roller Spin

0.0417

Bearing Type

Standard Duty

Vibration Frequency Inner Ring Defect

0.0994

Housing Coating

Powder Coated

End Cap Available

No

Grease Fitting Thread Size

1/4-28

Cage Type

Land Riding Retainer

Vibration Frequency Fundamental Train

0.0067

Shaft Locking Type

Set Screw

Fixed vs. Expansion

Fixed

Always verify dimensions, load ratings, material, and seal type before ordering.