Features and Applications of Full Complement Single Row Cylindrical Roller Bearings
Full complement single-row cylindrical roller bearings are a special type of cylindrical roller bearing manufactured without a cage (retainer). More rollers can be installed between the inner ring and outer ring raceways to fill the available space, which distinguishes them from caged cylindrical roller bearings.
Key Features
1. Ultra-high radial load carrying capacity
The full complement roller arrangement maximizes the number of rolling elements. It can withstand much heavier pure radial loads than caged bearings of the same boundary dimensions.
2. No axial load capacity
This full complement single row cylindrical roller bearing series can only carry radial loads. It cannot support any significant axial force.
3. Permits axial displacement
The inner ring and outer ring can shift axially relative to each other. It works well as a free-end bearing to compensate for shaft thermal elongation and machining tolerance errors.
4. Relatively low limiting speed
Without a cage to separate rollers, adjacent rollers slide against one another during rotation. Friction and heat generation increase, so the maximum allowable rotating speed is lower than equivalent caged bearings.
5. High rigidity and compact cross-section
Compact structure delivers high stiffness under heavy radial load, helping reduce shaft deflection.
6. Simple construction, easy mounting
Separable design: inner ring, roller set and outer ring can be fitted separately, convenient for installation, inspection and maintenance.
7. Good shock-load resistance
Dense roller layout makes it suitable for operating conditions with intermittent shock loads.
Detailed Applications
This full complement single row cylindrical roller bearing type is widely selected for low-speed, heavy-load, high-rigidity industrial applications where high radial load is prioritized over high rotational speed:
1. Rolling mill industry
Back-up rolls, heavy work roll support assemblies, roller table bearings, straightener rolls in steel, aluminum and copper rolling lines.
2. Gearboxes & heavy transmission units
Low-speed heavy-duty stages of industrial gearboxes, planetary gear reducers, winch gearboxes, extruder gearboxes, crane transmission gear sets.
3. Construction machinery
Rotary joints, heavy roller supports, slew drives, track roller assemblies for excavators, crawler cranes, road rollers and piling rigs.
4. Mining & mineral processing equipment
Conveyor pulley hubs, heavy idler rollers, crushing equipment bearing supports, rotary kiln support rollers, slurry pump bearing positions.
5. Lifting & port machinery
Crane trolley wheel bearings, hoist drum supports, container spreader rollers, port gantry crane heavy load pivot points.
6. Machine tools
Low-speed heavy-load spindle supports, heavy-duty lathe tailstock bearings, rotary table bearings, heavy machining fixture supports.
7. Paper & rubber machinery
Large calender rolls, rubber mixer roller supports, paper machine press rolls and dryer roll supports.
8. Wind & heavy energy equipment
Low-speed planet carrier supports, auxiliary heavy-load bearing points for large gear units of wind turbines.