At the core, you'll find two rows of spherical rollers, paired with a shared spherical raceway on the outer housing washers and two angled raceways on the central shaft washer. This setup gives the bearing its self-aligning ability, which is a game-changer for heavy machinery where perfect shaft alignment is hard to achieve.
How It Works in Real-World Use
The outer raceway is shaped with a concave spherical profile, centered exactly on the bearing's axis. The inner raceways are angled to match the rollers, so the bearing can automatically adjust to any misalignment between the shaft and housing. This reduces stress on all connected parts, which in turn extends the bearing's service life. Unlike single-direction thrust bearings, these models can handle axial loads from both sides, so you can often skip the hassle of pairing two separate bearings in your assembly.
Cage Options Tailored to Your Needs
We know every application is different, so we offer two main cage types to match your working conditions:
● CA Type: Machined brass solid cages. These are tough, wear-resistant, and perform exceptionally well in high-speed, high-load applications where reliability is non-negotiable.
● CC Type: Steel sheet stamped cages. A cost-effective choice for general heavy-duty machinery, delivering solid performance without the extra cost of a machined cage.
For precision, we stock standard P0 and P6 grades as default, and we can machine P5 grade for customers with special accuracy requirements. All our bearings meet GB/T 307.1 standards, so you know you're getting consistent, quality performance.
Internal Clearance for Every Environment
Different equipment runs at different temperatures, and different environments demand different fits. That's why we offer a full range of internal clearances: C2, standard (CN), C3, C4, and C5. All of these are fully aligned with GB/T 4604 specifications, so you can pick the exact clearance your application needs to run smoothly, whether you're dealing with high heat or heavy vibration.
Why These Bearings Stand Out
● They handle heavy axial loads from both directions, making them perfect for equipment that needs bidirectional thrust control, like screw conveyors and winches.
● The self-aligning design compensates for shaft misalignment, installation errors, and mechanical deformation, keeping your operations stable and reducing downtime.
● They're built to resist heavy loads, vibration, and shock, so they perform reliably even in the harshest industrial settings, from mining to steel mills.
● Optimized roller and raceway geometry cuts down on friction, reducing heat generation and extending the bearing's lifespan, which saves you money on maintenance and replacements.
Where You'll See These Bearings in Action
You'll find ZWZ double direction spherical roller thrust bearings in a huge range of heavy industrial equipment across multiple sectors:
● Metallurgy & Steel: Rolling mills, continuous casters, and heavy gearboxes
● Mining & Construction: Crushers, vibrating screens, drilling rigs, and lifting equipment
● Marine & Power: Ship propeller shafts, water turbines, and large motor drives
● General Industry: Screw conveyors, winches, extruders, and heavy-duty reducers