Flange Units
Sealmaster SF-21
Sealmaster Mounted Cast Iron Four Bolt Flange Ball Bearing - 52100 Bearing Steel, Black Oxided - Setscrew Lock - SF-21
SF-21 is also available as
This part has been discontinued.
An alternative is available — .
Seal Type
Felt Labyrinth Seal
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
- Felt labyrinth seal and flinger for dry and dusty environment
- 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
- Seal Type
- Felt Labyrinth Seal
- Rolling Element
- Ball Bearing
- Housing Base
- Solid
- Bore Shape
- Straight
- Insert Material
- 52100 Bearing Steel, Black Oxided
- Measure Units
- Inch
- Radial Dynamic Load Capacity (lb)
- 5,782 lb
- Pilot Configuration
- No Pilot
- Housing Construction
- One Piece
- Misalignment
- ±2.0° Misalignment - Static Only
- Internal Clearance
- Standard
- Bearing Insert Coating
- Black Oxide Coated
- End Cap
- No
Always verify dimensions, load ratings, material, and seal type before ordering.
- Brandi
- Sealmaster
- Mfg. Catalog Numberi
- SF-21
- Mfg. Part Numberi
- 700446
- GDS #i
- GDS-115504
- Categoryi
- Flange Units
Documents & Support
Datasheets, CAD drawings, and installation instructions are available on request.
Request DocumentationSF-21 options
| Part # | Configuration | Price | View |
|---|---|---|---|
| SF-21C | Contact seal | $243.91 | View |
Common Questions
Has the Sealmaster SF-21 been discontinued?
Yes. Sealmaster has discontinued the SF-21. The manufacturer's direct replacement is the SF-21C, which can be ordered from this page.
What is the minimum order quantity for the SF-21?
The minimum order quantity for the SF-21 is 20 units.
Is this a genuine Sealmaster part?
Yes. GDS Supply supplies the genuine Sealmaster SF-21, manufacturer article number 700446.