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Pillow Blocks
Sealmaster NPD-31C
GEN GOLD SET SCREW
NPD-31 is also available as
- NPD-31$310.56
- NPD-31C$872.65
- NPD-31 CXU$954.26
Dynamic Load Rating (lb)
7,889
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 on both sides of ball path with diamond faceted setscrews
- Single lip contact seal
- 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 and dimple for direct lubrication and anti-rotation
Dimensions
| Dim. | Meaning | in | mm |
|---|---|---|---|
| A | Base to Center Height | 2 1/4 | 57.2 |
| B | Base Length | 8 1/8 | 206.4 |
| C | Bolt Spacing Min | 6 | 152.4 |
| C (max) | Bolt Spacing Max | 6 1/2 | 165.1 |
| D | Base Width | 2 3/8 | 60.3 |
| G | Foot Height | 3/4 | 19.1 |
| H | Overall Height | 4 9/16 | 115.9 |
| J | Length Through Bore | 2 1/2 | 63.5 |
| K | 1 1/4 | 31.8 | |
| L | 2 15/32 | 62.7 |
Values as printed for NPD-31, the base part of NPD-31C; 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
- Overall Length (in)
- 8.13
- Overall Width (in)
- 2.5
- Base Width (in)
- 2.38
- Overall Height (in)
- 4.56
- Housing Construction
- One Piece
- Bolt Size (in)
- 5/8
- Outer Ring Land Profile
- Standard
- Bore Size - Inch
- 1.9375Shaft size chart
- Housing Color
- Black
- Misalignment Type
- Static Only
- Base to Center Height (in)
- 2.2500
- Foot Height (in)
- 0.75
- Cage Material
- PPS - Polyphenylene Sulfide
- Length Through Bore (in)
- 2.500
- Housing Type (Product Selection)
- Pillow Block, Two Bolt
- Seal Type (Product Selection)
- Single Lip Contact Seal
- Housing Style
- Pillow Block
- Inner Race Heat Treat Method
- Zone-Hardened
- Ability to Relubricate
- Yes
- Vibration Frequency Outer Ring Defect
- 0.0683
- Max Operating Temperature (F)
- 220
- Dynamic Load Rating (lb)
- 7,889
- Bolt Spacing Max (in)
- 6.5
- Bearing Insert Finish
- Black Oxide
- Housing Coating
- Powder Coated
- Vibration Frequency Roller Spin
- 0.0445
- Misalignment Capability
- ±2.0° Misalignment - Static Only
- Inner Ring Outside Diameter (in)
- 2.469
- Maximum Speed (RPM)
- 3550
- Base Length (in)
- 8.13
- Lubricant
- Lithium Complex NLGI 2 Grease
- Vibration Frequency Inner Ring Defect
- 0.0984
- Size Code
- 2-115
- Housing Material
- Cast Iron
- End Cap Available
- No
- Grease Fitting Thread Size
- 1/8 NPT
- Fixed vs. Expansion
- Fixed
- Shaft Locking Type
- Double Set Screw
- Cage Type
- Land Riding Retainer
- Bearing Type
- Standard Duty
- Vibration Frequency Fundamental Train
- 0.0068
- Radial Clearance
- Standard
- Centerline to Outermost Bearing Face (in)
- 1.250
- Bearing Insert Material
- 52100 Bearing Steel
- Bolt Spacing Min (in)
- 6
- Static Load Rating (lb)
- 5,216
- Duty/Series
- Standard
- Optional Seal
- Contact
- Operating Temperature Range (F)
- -20° to 220°F
- Dynamic Load Rating (N)
- 35,090
Always verify dimensions, load ratings, material, and seal type before ordering.
- Brandi
- Sealmaster
- Mfg. Catalog Numberi
- NPD-31C
- Mfg. Part Numberi
- 702490
- GDS #i
- GDS-116194
- Categoryi
- Pillow Blocks
- UPCi
- 662461017876
- Inserti
- 2-115DC
NPD-31 options
| Part # | Configuration | Price | View |
|---|---|---|---|
| NPD-31 | Base configuration | $310.56 | View |
| NPD-31CThis part | Contact seal | $872.65 | |
| NPD-31 CXU | Air-handling housing fit, noise tested | $954.26 | View |
Common Questions
What is the minimum order quantity for the NPD-31C?
The minimum order quantity for the NPD-31C is 10 units.
Is this a genuine Sealmaster part?
Yes. GDS Supply supplies the genuine Sealmaster NPD-31C, manufacturer article number 702490. Its UPC is 662461017876.
