Pillow Block Ball Bearing Housing Unit
A pillow block unit consists of a mounted ball bearing housed in a cast iron or steel housing with a pillow-shaped base for easy bolting to machinery frames. It incorporates sealed deep groove ball bearings for smooth rotation and is designed for supporting shafts in conveyor systems and agricultural equipment. Classified under HTS 8483.20.4040 as a housed bearing unit incorporating ball bearings, specifically a flange or take-up type.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If incorporating roller bearings instead of ball bearings
Roller bearing housed units fall under the roller bearing subheading in 8483.20.60, differentiated by rolling element type per Chapter 84 notes.
If supplied as individual loose ball bearings without housing
Unhoused ball bearings are classified separately under flywheel and pulley parts; housing integration moves it to 8483.20.
If specialized for semiconductor wafer processing equipment
Statistical notes exclude semiconductor-specific machines to Chapter 84 parts for high-precision cleanroom applications.
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Import Tips & Compliance
• Verify bearing type (ball vs roller) and housing style (pillow block vs flange) match HTS 8483.20.4040; misclassification to 8483.20.6080 common for roller types
• Provide detailed engineering specs, CAD drawings, and end-use declaration to avoid scrutiny from Customs on semiconductor vs general machinery use
• Comply with ISO 9001 standards for quality; include certificates of origin for preferential duty rates under USMCA or similar FTAs
Related Products under HTS 8483.20.40.40
Four-Bolt Flange Ball Bearing Unit
This flange-mounted ball bearing unit features a square four-bolt flange housing with pre-lubricated insert ball bearings, ideal for high-speed shaft support in pumps and fans. The self-aligning design compensates for minor shaft misalignment. It qualifies under HTS 8483.20.4040 for flange units incorporating ball bearings.
Take-Up Ball Bearing Housing Unit
Take-up units with ball bearings allow for shaft adjustment in conveyor belt tensioning systems, featuring cast iron housings and corrosion-resistant inserts. They incorporate angular contact ball bearings for axial load handling. Falls under HTS 8483.20.4040 as take-up housed bearings with ball elements.
Hanger Ball Bearing Unit
Ceiling or wall-mounted hanger ball bearing units support horizontal shafts in overhead conveyor systems, with lightweight aluminum or steel housings and solid lube ball bearings. Designed for low-vibration operation. HTS 8483.20.4040 covers hanger units incorporating ball bearings.
Heavy-Duty Cast Iron Ball Bearing Cartridge
Heavy-duty cartridge ball bearing units in cast iron housings withstand shock loads in crushers and ball mills, with triple-lip labyrinth seals and tapered roller-ball hybrid inserts. Specifically for 8483.20.4040 cartridge units with ball bearings.
Cartridge Ball Bearing Insert Unit
Cartridge-style ball bearing units are sealed inserts that fit into larger housings, used in mining equipment and heavy machinery for easy replacement. They feature double-lip seals and eccentric locking collars. Classified in HTS 8483.20.4040 for cartridge housed ball bearing units.
Adjustable Flange Ball Bearing Take-Up
Combination flange take-up ball bearing units offer both mounting flexibility and tension adjustment for conveyor and elevator shafts. Equipped with high-capacity ball bearing inserts and stainless steel baffles. Meets HTS 8483.20.4040 for multi-function housed ball bearing units.