Split cylindrical roller bearings

Split cylindrical roller bearings are mainly used on crankshafts and in areas where bearings are difficult to reach. Steel pipe cold slag machine crankshaft, ratchet, excavator, rolling mill drive shaft and large ventilation equipment are its main application fields.
When the integral cylindrical roller bearing is very difficult to maintain and replace and the equipment cannot be shut down, the split cylindrical roller bearing can show its special advantages. LMM has successfully developed the split cylindrical roller bearing that can be installed anytime and anywhere It meets the needs of transmission conveyor silver road bearings in the continuous casting cooling zone.

Double row split cylindrical roller bearings
Double-row split cylindrical roller bearings were initially developed as transmission bearings for rolling mills. The two halves of the outer ring are connected to each other after being installed in the bearing seat. Several keys can also be used to prevent rotation. An angle is formed between the cross-section of the split inner ring and the center line of the bearing, which makes the bearing rotate smoothly and is connected together with a clamp. The split brass cage is positioned by rollers. The axial clearance must meet the requirements of thermal expansion changes in the length of the universal joint shaft.
Size
The overall dimensions of split cylindrical roller bearings have not yet been standardized.
Axis angle alignment error
Ge row and double row split cylindrical roller bearings have a “logarithmic” curved contact surface between the rollers and the raceway. It can effectively improve the stress distribution inside the bearing and allow a small angular alignment error of 2”.
Tolerance
Split cylindrical roller bearings are produced to standard tolerance levels, except for the width tolerances of the inner and outer rings. Its standard tolerance values comply with IS0492-1986.
Internal clearance
Split cylindrical roller bearings are processed according to standard grade, and their values comply with ISO5753-1991.
Load capacity
Due to the reduction in the number of rollers, its load capacity is smaller than that of solid bearings.
When calculating the equivalent dynamic load, it is necessary to consider that the rollers do not exceed the raceway connection. This value depends on operating conditions.
Speed
Due to the dissection reasons, some vibration will be generated during operation, which limits its speed capability, which is about 50% of that of the integral bearing. Such a value cannot meet the needs of the user. Please consult the technical service department for appropriate improvement.
Design of related components
Split bearings are suitable for loads and rotations in both forward and reverse directions. The higher load should be P>0.12Cr, and the machining tolerance of the mounting shaft is h6. When the bearing is subjected to constant direction and light load (P<0.12Cr), the machining tolerance of the installation shaft can be h7. When the bearing is under light load and low speed, the tolerance of the shaft with adapter sleeve bearings is allowed to be h9/IT7. The bearing housing tolerance for mounting this bearing is H7.
Split cylindrical roller bearings are often used to replace the integral bearings originally installed on the equipment. Under this condition, the shaft tolerance should be processed according to n6-r7.
Equivalent dynamic load
When the bearing is subjected to pure radial load, its equivalent dynamic intercept load is obtained as follows:
P=bFI When selecting the b value, the working conditions of the equipment and the need for stable operation must be considered.
Select as described below.
The equipment rotates at a constant speed and requires stability and reliability: take 1.1-1.3
The equipment withstands the impact of the country and has unstable force: take 1.3-2.0
The equipment bears large impact loads or swings: take 2.0-4.0
Equivalent static load: Por=Fr.