China Factory for Main Spindle Bearing - NN3012KTN/SP Super-precision Double-row cylindrical roller bearing – CWL
China Factory for Main Spindle Bearing - NN3012KTN/SP Super-precision Double-row cylindrical roller bearing – CWL Detail:
These bearings are therefore particularly well suited for machine tool spindles where the bearing arrangement must accommodate heavy radial loads and high speeds, while providing a high degree of stiffness, double row bearings are more suitable for heavier loads.
Double-row cylindrical roller bearings have two structures: cylindrical inner bore and conical inner bore (the bearing rear code plus K). The conical inner hole can also play the role of micro-adjustment of the clearance, and can simplify the structure of the positioning device and facilitate installation and disassembly.
Commonly used double row cylindrical roller bearings have the following types: NN series, NNU series, and NNF series.Tolerances: SP, UP, SP and UP for 1:12 tapered bore.
NN3012KTN/SP Super-precision Double-row cylindrical roller bearing Suffix description
K:Tapered Bore, Taper 1:12
TN: PA66 cage
SP:Special Precision Class For Machine Tool Bearings: Dimensional Accuracy Approximately To P5, Running Accuracy Approximately To P4
Super-precision cylindrical roller bearings are characterized by:
High speed capability
High radial load carrying capacity
High rigidity
Low friction
Low cross-sectional height
NN3012KTN/SP Double-row cylindrical roller detail Specifications
Main Dimensions
Bore diameter (d):60mm
Outer diameter(D):95mm
Width(B): 26mm
Limiting rating Pu:12.7Kn
Dynamic load ratings (Cr): 73.7KN
Static load rating (Cor): 106KN
Limiting speeds grease :9000 rpm
Limiting speeds oil:10000rpm
ABUTMENT DIMENSIONS
Abutment diameter shaft (da)min.:66.5mm
Abutment diameter housing(Da)min.:87mm
Abutment diameter housing(Da)max.:88.5mm
Oil nozzle position (not for variants with TNHA cage) dn:85mm
Product detail pictures:
Related Product Guide:
We normally think and practice corresponding on the change of circumstance, and grow up. We aim at the achievement of a richer mind and body and also the living for China Factory for Main Spindle Bearing - NN3012KTN/SP Super-precision Double-row cylindrical roller bearing – CWL , The product will supply to all over the world, such as: Congo, Netherlands, Sudan, As an experienced factory we also accept customized order and make it same as your picture or sample specifying specification and customer design packing. The main goal of the company is to live a satisfactory memory to all the customers,and establish a long term win-win business relationship. For more information,please contact us. And it's our great pleasure if you like to have a personally meeting in our office.
By Chris from Colombia - 2018.09.21 11:01
With a positive attitude of "regard the market, regard the custom, regard the science", the company works actively to do research and development. Hope we have a future business relationships and achieving mutual success.
By Fiona from Melbourne - 2017.11.29 11:09
