MACHINE TOOLS
NSK Bearings for Machine Tools
Machine Tool Precision bearings are very accurately engineered components and as such are very important to the successful performance of the machine tool. The way in which a bearing is handled and fitted to a machine tool does not only determine if the machine operates accurately but can also affect the life of the bearing in the spindle.
NSK Super Precision Bearings – Product Range
Several types of Super Precision Bearings are available from NSK. These include the ROBUST series of high performance bearings, special series of bearings for unique and specialised applications, and the standard series bearings.
NSKHPS High Precision Angular Contact Ball Bearings
Basic Super Precision Bearings manufactured to conform to ISO standards.
› 70xx, 72xx, 79xx series
› Contact angles: 15˚ (C), 25˚ (A5), 30˚ (A)
› Cage design: phenolic (TR) or polyamide (TYN), depending on application requirements
› Ball material: steel, ceramic (SN24)
Sealed Angular Contact Ball Bearings
Pre-greased and sealed to reduce handling problems. Suitable for maintenance of machine tool spindles.
› Standard series super precision angular contact ball bearings
› ROBUST series high-speed angular contact ball bearings
› Bore size range: ø30–100 mm in ISO series 10 and 19 (70xx and 79xx)
Double Row Cylindrical Roller Bearings
Designed to deliver high rigidity in high-speed applications such as lathe spindles.
› Cage material: brass (MB), PPS resin (TB)
› Standard specification E44: Outer ring oil holes and groove
High Precision Deep Groove Ball Bearings
Suitable for high-speed and high precision motors.
› Cage material: ball guided polyamide cage (T1X,TYA), inner ring guided phenolic cage (T), selection depends on the application
› Suitable for silent or low vibration operation
Ultra High Precision Angular Contact Ball Bearings
High performance bearings developed specifically for internal grinding or high-speed motor applications under spring preload.
› Bore size range: ø6–25 mm, contact angle: 15˚
› Ball material: steel (S type), ceramic (H and X type)
› Non separable type
› Universal combinations (DU and SU)
High-Speed Angular Contact Thrust Ball Bearings
High rigidity thrust bearings for lathe applications.
› Contact angles: 30˚ (BAR), 40˚ (BTR)
› Ball material: steel (S type), ceramic (H type)
Ultra High-Speed Angular Contact Ball Bearings
High performance bearings developed for high-speed operation with low temperature rise. Suitable for ultra high precision machining applications, and ultra high-speed applications.
› Contact angles: 18˚ (BNR), 25˚ (BER)
› Ball material: steel (S type), ceramic (H and X type)
› Cage design: phenolic (T), polyamide (TYN), depending on application requirements
› ROBUST series also can be used for ultra high speed applications of over 3 million dmn.
Ultra High-Speed Single Row Cylindrical Roller Bearings
High performance cylindrical bearings designed for ultra high-speed applications, such as machining centre spindles.
› Cage material: brass (MR)(1), PEEK resin (TP)
› Roller material: steel, SHX, ceramic
› Ultra high-speed ROBUST RXH design can be used up to 3 million dmn.
(1) MR cage is used in the standard series