MF52-ZZC PS2 is a standard flanged ball bearing. Its confirmed configuration is single row, shielded, and specified for radial loading. Selection depends on the interaction of its contact geometry, dimensional interfaces, component materials, enclosure, internal condition, and published operating data rather than on the model code or catalog family alone.
Construction and Load Path
MF52-ZZC PS2 combines a radial ball-bearing load path with an outer-ring flange that provides a positive housing-side axial locating interface. The flange locates the bearing; the main outside diameter remains the primary radial seating surface.
The housing should support the cylindrical outer-ring surface uniformly and provide clearance for the flange. Uneven clamping or force concentrated at the flange edge can tilt or distort the outer ring, so mounting-face flatness and shoulder geometry remain part of the bearing installation.
Dimensional Interfaces
The principal envelope for MF52-ZZC PS2 is defined by bore 2 mm, outside diameter 5 mm, and width 2.5 mm. These dimensions must agree with the shaft, housing, shoulders, and available axial space as a coordinated set. They are interface controls, not isolated values to be matched independently.
No complete set of interface tolerances is asserted here. Fit and stack-up decisions should therefore retain the published nominal geometry and use the applicable bearing-fit practice for the actual load direction, ring rotation, mating materials, temperature, and required installed condition.
Mounting and Structural Support
Installation of MF52-ZZC PS2 should use clean, burr-free shaft and housing seats and apply force through the ring being fitted. The specified shaft mounting method is Press Fit. Assembly force should not pass through the rolling elements, and the selected fit should account for ring rotation relative to load, mating-part stiffness, and temperature.
Shoulder squareness, seat roundness, concentricity, and uniform housing support influence alignment and running clearance. After mounting, free rotation, torque, noise, and temperature behavior can help identify binding, contamination, distortion, or unintended preload.
Component Materials
The fixed component specifications for MF52-ZZC PS2 identify rings as Chrome Steel, rolling elements as Chrome Steel, cage as Chrome Steel, and seal as Chrome Steel. Each value remains tied to its component role; ring material does not define ball, cage, seal, or shield material, and different materials may legitimately be specified for different components.
Component materials influence contact behavior, stiffness, thermal response, wear, lubricant compatibility, and environmental suitability. Those effects depend on the actual material pair, heat treatment, surface condition, lubricant, fits, load, speed, temperature, and exposure; no corrosion, electrical, chemical, food, medical, marine, or other application qualification is implied without explicit supporting data.
Precision, Clearance, and Tolerances
The listed internal-condition data for MF52-ZZC PS2 include precision notation Abec#1/isop0 and clearance designation MC3. The notation is retained exactly as supplied; no unsupported equivalence between ABEC, ISO, P-class, or manufacturer-specific terms is introduced.
Initial clearance and catalog precision do not describe the complete installed condition. Interference fits, ring temperature difference, shaft and housing geometry, shoulder runout, cleanliness, mounting force, and operating load can alter running clearance, alignment, torque, and contact distribution.
Load Ratings and Operating Data
The published radial ratings for MF52-ZZC PS2 are 37 lbf dynamic and 11 lbf static. These values belong to different engineering checks: the dynamic rating supports rotating-fatigue evaluation, while the static rating is relevant to permanent-deformation risk under stationary, peak, or slowly moving load.
The operating data also provide maximum-speed entry 85 under the published ×1,000 rpm convention and temperature entry -86 to 230 °F. These are selection inputs, not independent guarantees of assembled performance. Fit, load, lubrication, closure drag, heat removal, alignment, and duty cycle determine whether the complete application can operate within the published conditions.
Enclosure and Lubrication
MF52-ZZC PS2 is specified as shielded. A shield provides a non-contact barrier that assists lubricant retention and limits direct entry of larger particles; it is not equivalent to a contact seal or proof of liquid exclusion.
The listed lubrication condition is Kyodo Ps2 Grease. That confirms only the stated condition and does not establish one universal lubricant grade, fill quantity, replenishment interval, or service life. The lubricant plan still has to match load, speed, temperature, closure, storage, and contamination exposure.
Selection and Application Context
MF52-ZZC PS2 may be considered for compact housings that benefit from a positive outer-ring axial locating face. These are general engineering contexts rather than certifications or guarantees of suitability. Final selection should verify load magnitude and direction, duty cycle, speed, temperature, lubrication, contamination exposure, required life, fits, and structural support.
The practical identity of MF52-ZZC PS2 comes from the way its dimensions, contact geometry, component materials, closure, internal condition, and published operating data work together. A bearing with the same bore can behave differently when its width, outer diameter, row arrangement, enclosure, clearance, material configuration, or ratings differ.
