Pillow Blocks
Sealmaster NP-20RT
Sealmaster Mounted Cast Iron Two Bolt Pillow Block Ball Bearing - 52100 Bearing Steel, Black Oxided - Concentric Lock - NP-20RT
NP-20 is also available as
Dynamic Load Rating (lb)
4,381
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
- Skwezloc™ concentric locking for near perfect concentricity
- 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 11/16 | 42.9 |
| B | Base Length | 6 1/2 | 165.1 |
| C | Bolt Spacing Min | 4 7/16 | 112.7 |
| C (max) | Bolt Spacing Max | 5 1/16 | 128.6 |
| D | Base Width | 1 7/8 | 47.6 |
| G | Foot Height | 9/16 | 14.3 |
| H | Overall Height | 3 3/8 | 85.7 |
| J | 1 9/16 | 39.7 | |
| K | 15/16 | 23.8 |
Values as printed for NP-20RT. Verify critical dimensions before ordering.
- Housing Base
- Solid
- Rolling Element
- Ball Bearing
- Bore Shape
- Straight
- Base Width (in)
- 1.88
- Overall Height (in)
- 3.38
- Overall Width (in)
- 1.88
- Overall Length (in)
- 6.5
- Bolt Size (in)
- 1/2
- Housing Construction
- One Piece
- Housing Color
- Black
- Bore Size - Inch
- 1.25Shaft size chart
- Outer Ring Land Profile
- Standard
- Misalignment Type
- Static Only
- Foot Height (in)
- 0.56
- Base to Center Height (in)
- 1.6875
- Cage Material
- PPS - Polyphenylene Sulfide
- Length Through Bore (in)
- 1.56
- Housing Type (Product Selection)
- Pillow Block, Two Bolt
- Seal Type (Product Selection)
- Felt Labyrinth Seal
- Housing Style
- Pillow Block
- Inner Race Heat Treat Method
- Zone-Hardened
- Ability to Relubricate
- Yes
- Locking Collar Outside Diameter (in)
- 2.23
- Misalignment Capability
- ±2.0° Misalignment - Static Only
- Housing Coating
- Powder Coated
- Grease Fitting Thread Size
- 1/4-28
- Vibration Frequency Outer Ring Defect
- 0.0595
- Bolt Spacing Max (in)
- 5.06
- Bolt Spacing (in)
- 4.75
- Fixed vs. Expansion
- Fixed
- Static Load Rating (lb)
- 2,567
- End Cap Available
- No
- Vibration Frequency Fundamental Train
- 0.0066
- Bearing Type
- Standard Duty
- Radial Clearance
- Standard
- Vibration Frequency Inner Ring Defect
- 0.0905
- Housing Material
- Cast Iron
- Max Operating Temperature (F)
- 220
- Bearing Insert Material
- 52100 Bearing Steel
- Inner Ring Outside Diameter (in)
- 1.594
- Dynamic Load Rating (lb)
- 4,381
- Cage Type
- Land Riding Retainer
- Shaft Locking Type
- Concentric
- Base Length (in)
- 6.5
- Maximum Speed (RPM)
- 7600
- Lubricant
- Lithium Complex NLGI 2 Grease
- Bolt Spacing Min (in)
- 4.44
- Size Code
- 2-13
- Bearing Insert Finish
- Black Oxide
- Vibration Frequency Roller Spin
- 0.0385
- Centerline to Outermost Bearing Face (in)
- 0.98
- Duty/Series
- Standard
- Optional Seal
- Contact
- Operating Temperature Range (F)
- -20° to 220°F
- Dynamic Load Rating (N)
- 19,487
Always verify dimensions, load ratings, material, and seal type before ordering.
- Brandi
- Sealmaster
- Mfg. Catalog Numberi
- NP-20RT
- Mfg. Part Numberi
- 706260
- GDS #i
- GDS-117242
- Categoryi
- Pillow Blocks
- UPCi
- 662461269787
- Inserti
- 1-14T
NP-20 options
| Part # | Configuration | Price | View |
|---|---|---|---|
| NP-20 | Base configuration | $136.85 | View |
| NP-20C | Contact seal | $136.85 | View |
| NP-20R | Reduced housing envelope | $170.24 | View |
| NP-20RC | Reduced housing envelope, contact seal | $196.99 | View |
| NP-20RTThis part | Reduced housing envelope, Skwezloc concentric locking collar | $173.69 | |
| NP-20T | Skwezloc concentric locking collar | $172.96 | View |
| NP-20TC | Skwezloc concentric locking collar, contact seal | $172.96 | View |
| NP-20 DRT | High-contamination seal | Request quote | View |
| NP-20 HI | High-performance high temperature | $327.31 | View |
| NP-20 HT | High temperature | $274.78 | View |
| NP-20R HI | Reduced housing envelope, High-performance high temperature | $310.87 | View |
| NP-20R XLO | Reduced housing envelope, Extra low drag | $1,022.62 | View |
| NP-20T HS | Skwezloc concentric locking collar, High speed | $648.84 | View |
| NP-20T RM | Skwezloc concentric locking collar, Reduced maintenance | $241.64 | View |
| NP-20U RM | Spring seal, spring-in (UltraGard), Reduced maintenance | $902.46 | View |
Bearing insert used in this unit
| Part # | Name | Each |
|---|---|---|
| 711030 | 1-14T | $166.44 |
Common Questions
Is this a genuine Sealmaster part?
Yes. GDS Supply supplies the genuine Sealmaster NP-20RT, manufacturer article number 706260. Its UPC is 662461269787.
