Overview
The SealMaster SFT-12 HT is a premium high-temperature flange-mount ball bearing unit engineered for industrial machinery requiring reliable operation in elevated-temperature conditions. This 3/4″ bore, two-bolt flange bearing combines SealMaster’s Gold Line quality with specialized sealing and lubrication to handle continuous service up to 400°F. The SFT-12 HT delivers superior performance in demanding automation, food processing, chemical handling, and metal fabrication applications where standard bearings fall short.
Key Features
- Extended inner ring design — wider bearing race geometry supports higher loads and improves stability
- Zone-hardened inner ring — 120° balanced three-point setscrew contact minimizes vibration and distortion
- High-temperature Nomex seal — labyrinth seal with flinger excludes contaminants while retaining lubrication at elevated temperatures
- GoldPlex HP high-temperature grease — formulated for extended service intervals in thermal stress applications
- Cast iron housing with powder coat — provides rigidity, vibration damping, and corrosion resistance
- Direct lubrication lock-pin system — SealMaster exclusive anti-rotation feature with dedicated grease path into bearing
Technical Specifications
- Bore diameter: 3/4″ (0.75″)
- Housing type: Cast iron, 2-bolt flange mount
- Overall length: 4.406″ (4-13/32″)
- Bolt center-to-center: 3.531″ (3-17/32″)
- Locking device: Setscrew (120° spaced, diamond-faceted)
- Bearing material: 52100 chrome steel, black oxide treated
- Seal type: High-temperature felt labyrinth with flinger
- Dynamic load capacity: 2,611 lbf
- Static load capacity: 1,444 lbf
- Maximum speed: 7,300 rpm
- Operating temperature range: -20°F to 400°F
- Lubrication: GoldPlex HP high-temperature grease
Typical Applications
- Food and beverage processing equipment operating near ovens or steam lines
- Textile machinery and dryers requiring continuous thermal stability
- Chemical processing equipment exposed to elevated ambient temperatures
- Metal fabrication and forging equipment supporting rotating components
- Agricultural equipment and hay processing machinery
- Industrial conveyor systems in high-temperature environments
Compatibility & Replacements
Compatible With
- Standard 3/4″ shaft machinery and motor applications
- Standard two-bolt flange mounting surfaces (3.531″ bolt spacing)
- Industrial automation systems requiring standard-duty bearing cartridges
- OEM equipment utilizing SealMaster SFT-series flange units
Replaces / Drop-In Replacement For
- SFT-12T — Standard SFT-12 variant with Skwezloc locking collar
- Legacy flange bearings in equivalent 3/4″ bore, 2-bolt mounting configuration (verify bolt spacing before ordering)
Works With
- Pillow block and rigid flange mounting configurations
- Regreasable bearing cartridge service (field-relubrication compatible)
- Standard industrial shaft couplings and pulleys compatible with 0.75″ bore
- Monitoring systems requiring vibration and temperature sensing (housing provides stable mounting platform)
