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Pillow Blocks
Sealmaster TB-21
GOLD BRGS UNIT MATL
Dynamic Load Rating (lb)
5,782
Thread Size
1/2-13
Rolling Element
Ball Bearing
Housing Base
Solid
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 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 and dimple for direct lubrication and anti-rotation
Dimensions
| Dim. | Meaning | in | mm |
|---|---|---|---|
| A | Base to Center Height | 1 7/8 | 47.6 |
| B | Base Length | 4 1/4 | 108.0 |
| C | Bolt Spacing | 3 1/4 | 82.6 |
| D | Housing Width | 1 7/8 | 47.6 |
| H | Overall Height | 3 3/4 | 95.3 |
| J | 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 TB-21. Verify critical dimensions before ordering.
- Thread Size
- 1/2-13
- Rolling Element
- Ball Bearing
- Housing Base
- Solid
- Base Width (in)
- 1.75
- Overall Height (in)
- 3.75
- Overall Length (in)
- 4.41
- Housing Construction
- One Piece
- Overall Width (in)
- 1.88
- Bore Shape
- Straight
- Misalignment Type
- Static Only
- Outer Ring Land Profile
- Standard
- Housing Color
- Black
- Bore Size - Inch
- 1.3125Shaft size chart
- Base to Center Height (in)
- 1.875
- Thread Depth (in)
- 0.75
- Cage Material
- PPS - Polyphenylene Sulfide
- Length Through Bore (in)
- 1.6875
- Seal Type (Product Selection)
- Felt Labyrinth Seal
- Housing Type (Product Selection)
- Pillow Block, Tapped Base
- Housing Style
- Pillow Block
- Ability to Relubricate
- Yes
- Inner Race Heat Treat Method
- Zone-Hardened
- Housing Material
- Cast Iron
- Housing Coating
- Powder Coated
- Bearing Insert Material
- 52100 Bearing Steel
- Bearing Type
- Standard Duty
- Lubricant
- Lithium Complex NLGI 2 Grease
- Radial Clearance
- Standard
- Bolt Spacing (in)
- 3.25
- Cage Type
- Land Riding Retainer
- End Cap Available
- No
- Base Length (in)
- 4.25
- Dynamic Load Rating (lb)
- 5,782
- Misalignment Capability
- ±2.0° Misalignment - Static Only
- Inner Ring Outside Diameter (in)
- 1.859
- Centerline to Outermost Bearing Face (in)
- 1.000
- Fixed vs. Expansion
- Fixed
- Grease Fitting Thread Size
- 1/4-28
- Size Code
- 2-17
- Max Operating Temperature (F)
- 220
- Bearing Insert Finish
- Black Oxide
- Maximum Speed (RPM)
- 4650
- Static Load Rating (lb)
- 3,493
- Shaft Locking Type
- Set Screw
- Housing Width (in)
- 1.88
- 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
- TB-21
- Mfg. Part Numberi
- 700875
- GDS #i
- GDS-115728
- Categoryi
- Pillow Blocks
- UPCi
- 662461007228
- Inserti
- 2-15
Bearing insert used in this unit
| Part # | Name | Each |
|---|---|---|
| 700022 | 2-15 | $214.79 |
Common Questions
What is the minimum order quantity for the TB-21?
The minimum order quantity for the TB-21 is 10 units.
Is this a genuine Sealmaster part?
Yes. GDS Supply supplies the genuine Sealmaster TB-21, manufacturer article number 700875. Its UPC is 662461007228.
