Pillow Blocks
Sealmaster NP-12C
Sealmaster Mounted Cast Iron Two Bolt Pillow Block Ball Bearing - 52100 Bearing Steel, Black Oxided - Setscrew Lock - NP-12C
NP-12 is also available as
Dynamic Load Rating (lb)
2,611
Housing Base
Solid
Rolling Element
Ball Bearing
Bore Shape
Straight
Need help confirming fit? Send us the current part number, shaft size, housing photo, or equipment model.
Product Overview
- Powder coated epoxy cast iron housing with extended inner ring bearings
- Zone hardened inner ring with 120° spacing setscrew locking with diamond faceted setscrews
- Single lip contact seal with black oxide bearing races
- Unique land riding retainer design provides superior pocket clearance that allows for 360° grease circulation around the rolling elements resulting in better retained and utilized lubrication.
- Sealmaster™ exclusive lock pin , dimple for direct lubrication and anti-rotation
Dimensions
| Dim. | Meaning | in | mm |
|---|---|---|---|
| A | Base to Center Height | 1 5/16 | 33.3 |
| B | Overall Length | 5 | 127.0 |
| C | Bolt Spacing Min | 3 3/8 | 85.7 |
| C (max) | Bolt Spacing Max | 4 1/8 | 104.8 |
| D | Base Width | 1 1/2 | 38.1 |
| G | Foot Height | 1/2 | 12.7 |
| H | Overall Height | 2 9/16 | 65.1 |
| J | Length Through Bore | 1 7/32 | 31.0 |
| K | Centerline to Outermost Bearing Face | 23/32 | 18.3 |
| L | Inner Ring Outside Diameter | 1 3/16 | 30.2 |
Values as printed for NP-12, the base part of NP-12C; the options in this part number do not change the housing. Verify critical dimensions before ordering.
- Housing Base
- Solid
- Rolling Element
- Ball Bearing
- Bore Shape
- Straight
- Base Width (in)
- 1.5
- Overall Height (in)
- 2.56
- Overall Length (in)
- 5
- Overall Width (in)
- 1.5
- Bolt Size (in)
- 3/8
- Housing Construction
- One Piece
- Outer Ring Land Profile
- Standard
- Bore Size - Inch
- 0.75Shaft size chart
- Misalignment Type
- Static Only
- Housing Color
- Black
- Base to Center Height (in)
- 1.3125
- Foot Height (in)
- 0.5
- Cage Material
- PPS - Polyphenylene Sulfide
- Length Through Bore (in)
- 1.219
- Housing Type (Product Selection)
- Pillow Block, Two Bolt
- Seal Type (Product Selection)
- Single Lip Contact Seal
- Housing Style
- Pillow Block
- Ability to Relubricate
- Yes
- Inner Race Heat Treat Method
- Zone-Hardened
- Dynamic Load Rating (lb)
- 2,611
- Bolt Spacing Min (in)
- 3.38
- Bearing Type
- Standard Duty
- Cage Type
- Land Riding Retainer
- Base Length (in)
- 5
- Vibration Frequency Fundamental Train
- 0.0066
- Inner Ring Outside Diameter (in)
- 1.188
- Bolt Spacing (in)
- 3.75
- Bearing Insert Finish
- Black Oxide
- Lubricant
- Lithium Complex NLGI 2 Grease
- Vibration Frequency Outer Ring Defect
- 0.0593
- Bolt Spacing Max (in)
- 4.13
- Maximum Speed (RPM)
- 6450
- Size Code
- 2-012
- End Cap Available
- No
- Fixed vs. Expansion
- Fixed
- Shaft Locking Type
- Set Screw
- Max Operating Temperature (F)
- 220
- Centerline to Outermost Bearing Face (in)
- 0.719
- Vibration Frequency Roller Spin
- 0.0381
- Radial Clearance
- Standard
- Bearing Insert Material
- 52100 Bearing Steel
- Vibration Frequency Inner Ring Defect
- 0.0907
- Grease Fitting Thread Size
- 1/4-28
- Misalignment Capability
- ±2.0° Misalignment - Static Only
- Housing Coating
- Powder Coated
- Static Load Rating (lb)
- 1,444
- Housing Material
- Cast Iron
- Duty/Series
- Standard
- Optional Seal
- Contact
- Operating Temperature Range (F)
- -20° to 220°F
- Dynamic Load Rating (N)
- 11,614
Always verify dimensions, load ratings, material, and seal type before ordering.
- Brandi
- Sealmaster
- Mfg. Catalog Numberi
- NP-12C
- Mfg. Part Numberi
- 703243
- GDS #i
- GDS-116277
- Categoryi
- Pillow Blocks
- UPCi
- 662461020623
- Inserti
- 2-012C
NP-12 options
| Part # | Configuration | Price | View |
|---|---|---|---|
| NP-12 | Base configuration | $89.76 | View |
| NP-12CThis part | Contact seal | $103.04 | |
| NP-12T | Skwezloc concentric locking collar | $113.44 | View |
| NP-12TC | Skwezloc concentric locking collar, contact seal | $138.32 | View |
| NP-12 CXU | Air-handling housing fit, noise tested | Request quote | View |
| NP-12 HT | High temperature | $178.43 | View |
| NP-12 LO | Low drag | Request quote | View |
| NP-12T CXU | Skwezloc concentric locking collar, Air-handling housing fit, noise tested | $238.43 | View |
| NP-12TX ALP | — | $171.59 | View |
Bearing insert used in this unit
| Part # | Name | Each |
|---|---|---|
| 700009 | 2-012 | $59.22 |
Common Questions
Is this a genuine Sealmaster part?
Yes. GDS Supply supplies the genuine Sealmaster NP-12C, manufacturer article number 703243. Its UPC is 662461020623.
