Pillow Blocks
Sealmaster NP-20
Sealmaster Mounted Cast Iron Two Bolt Pillow Block Ball Bearing - 52100 Bearing Steel, Black Oxided - Setscrew Lock - NP-20
NP-20 is also available as
Dynamic Load Rating (lb)
5,782
Rolling Element
Ball Bearing
Housing Base
Solid
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
- 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 7/8 | 47.6 |
| B | Overall Length | 6 9/16 | 166.7 |
| C | Bolt Spacing Min | 4 11/16 | 119.1 |
| C (max) | Bolt Spacing Max | 5 5/16 | 134.9 |
| D | Base Width | 1 7/8 | 47.6 |
| G | Foot Height | 5/8 | 15.9 |
| H | Overall Height | 3 3/4 | 95.3 |
| J | Length Through Bore | 1 11/16 | 42.9 |
| K | Centerline to Outermost Bearing Face | 1 | 25.4 |
| L | Inner Ring Outside Diameter | 1 55/64 | 47.2 |
Values as printed for NP-20. Verify critical dimensions before ordering.
- Rolling Element
- Ball Bearing
- Housing Base
- Solid
- Bore Shape
- Straight
- Overall Width (in)
- 1.88
- Overall Length (in)
- 6.56
- Base Width (in)
- 1.88
- Overall Height (in)
- 3.75
- Bolt Size (in)
- 1/2
- Housing Construction
- One Piece
- Outer Ring Land Profile
- Standard
- Housing Color
- Black
- Bore Size - Inch
- 1.25Shaft size chart
- Misalignment Type
- Static Only
- Base to Center Height (in)
- 1.875
- Foot Height (in)
- 0.63
- Cage Material
- PPS - Polyphenylene Sulfide
- Length Through Bore (in)
- 1.685
- Housing Type (Product Selection)
- Pillow Block, Two Bolt
- Seal Type (Product Selection)
- Felt Labyrinth Seal
- Housing Style
- Pillow Block
- Ability to Relubricate
- Yes
- Inner Race Heat Treat Method
- Zone-Hardened
- Vibration Frequency Fundamental Train
- 0.0066
- Base Length (in)
- 6.56
- Bearing Insert Finish
- Black Oxide
- Cage Type
- Land Riding Retainer
- Vibration Frequency Roller Spin
- 0.0386
- Lubricant
- Lithium Complex NLGI 2 Grease
- Max Operating Temperature (F)
- 220
- Bearing Insert Material
- 52100 Bearing Steel
- Shaft Locking Type
- Set Screw
- Size Code
- 2-17
- Inner Ring Outside Diameter (in)
- 1.851
- Bearing Type
- Standard Duty
- Fixed vs. Expansion
- Fixed
- Dynamic Load Rating (lb)
- 5,782
- Misalignment Capability
- ±2.0° Misalignment - Static Only
- Housing Material
- Cast Iron
- Housing Coating
- Powder Coated
- Radial Clearance
- Standard
- Grease Fitting Thread Size
- 1/4-28
- End Cap Available
- No
- Vibration Frequency Inner Ring Defect
- 0.0905
- Bolt Spacing Max (in)
- 5.31
- Maximum Speed (RPM)
- 4650
- Static Load Rating (lb)
- 3,493
- Centerline to Outermost Bearing Face (in)
- 1
- Vibration Frequency Outer Ring Defect
- 0.0595
- Bolt Spacing (in)
- 5
- Bolt Spacing Min (in)
- 4.69
- Duty/Series
- Standard
- Optional Seal
- Contact
- Operating Temperature Range (F)
- -20° to 220°F
- Dynamic Load Rating (N)
- 25,718
Always verify dimensions, load ratings, material, and seal type before ordering.
- Brandi
- Sealmaster
- Mfg. Catalog Numberi
- NP-20
- Mfg. Part Numberi
- 700185
- GDS #i
- GDS-115393
- Categoryi
- Pillow Blocks
- UPCi
- 662461001615
- Inserti
- 2-14
NP-20 options
| Part # | Configuration | Price | View |
|---|---|---|---|
| NP-20This part | Base configuration | $136.85 | |
| 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-20RT | Reduced housing envelope, Skwezloc concentric locking collar | $173.69 | View |
| 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 |
|---|---|---|
| 700020 | 2-14 | $191.01 |
Common Questions
Is this a genuine Sealmaster part?
Yes. GDS Supply supplies the genuine Sealmaster NP-20, manufacturer article number 700185. Its UPC is 662461001615.
