B7215-E-2RSD-T-P4S-UL Spindle Bearing
|
Brand |
= |
SEMRI |
|
Manufacturer Part Number |
= |
B7215-E-2RSD-T-P4S-UL |
|
Inside Diameter |
= |
75mm |
|
Outside Diameter |
= |
130mm |
|
Width |
= |
25m |
|
Contact Angle |
= |
25° |
|
Precision Grade |
= |
P4S |
|
Seals or Shields |
= |
Laminated fabric cage |
|
Clearance |
= |
CN = Standard Internal clearance |
|
Cage Type |
= |
T = Outerring Guided Phenolic Cage
|
The B7215-E-2RSD-T-P4S(including the universally matchable -UL variant) is a super-precision angular contact ball bearing. It is purpose-built for operating environments demanding extreme speed, high precision, and high rigidity.
Its core application is in CNC machine tool spindles, but it is also widely used across various high-speed, precision machinery.
1. CNC Machine Tools & Metal Cutting
This is the primary and most critical application field for this bearing model:
-
Machine Tool Spindles: Serving as the support bearing for CNC milling machines, lathes, and machining centers to ensure stable, high-speed rotation of tools or workpieces.
-
Motorized Spindles (Built-in Spindles): Acting as the high-demand support end where vibration and heat generation must be kept to an absolute minimum.
-
Grinding Wheel & Headstock Spindles: Used in cylindrical and internal grinding machines where exceptional radial and axial runout precision (P4S rating) is non-negotiable.
-
Precision Boring Heads: Applied in high-speed boring operations that require strict surface finish and tolerance standards.
2. High-Speed & Precision Processing Equipment
-
Engraving & High-Gloss Milling Machines: Used in mold-engraving and high-gloss processing equipment for glass or smartphone casings, where the 2RSD dual-lip seals keep out fine dust while retaining grease.
-
Woodworking Machinery: Integrated into the high-speed motorized spindles of CNC routers and edge-banding machines.
-
PCB Drilling Machines: Supporting the ultra-high-speed drilling spindles used for making micro-holes in printed circuit boards.
3. Precision Instruments & Testing Equipment
-
High-Precision Rotary Tables: Installed in precision indexing plates and rotary axes for automated manufacturing or optical inspection setups.
-
Dynamic Balancing Machines: Supporting the core spindle component where minimal inherent vibration and superior rotational accuracy are critical for measurement precision.
-
Optical Processing Equipment: Used in the main spindles of machines dedicated to grinding and polishing precision optical lenses.
4. Other High-Speed Fluid & Turbo Machinery
-
High-Speed Turbochargers: Employed in lightweight, ultra-high-speed miniature turbo systems.
-
Precision Vacuum Pumps: Utilized in high-vacuum devices like molecular pumps that run at extreme speeds and require tight control over lubricant vaporization.
Pre：B7214-E-2RSD-T-P4S-UL Spindle Bearing
Next：B7215-C-2RSD-T-P4S-UL Spindle Bearing
