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China Factory for Main Spindle Bearing - NN3012KTN/SP Super-precision Double-row cylindrical roller bearing – CWL

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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


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China Factory for Main Spindle Bearing - NN3012KTN/SP Super-precision Double-row cylindrical roller bearing – CWL detail pictures


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With this motto in mind, we've got develop into amongst one of the most technologically innovative, cost-efficient, and price-competitive manufacturers 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: Salt Lake City, Plymouth, Malta, Our products have mainly exported to south-east Asia Euro-America, and sales to all of our country. And depending on excellent quality, reasonable price, best service, we've got got good feedback from customers overseas. You are welcomed to join us for more possibilities and benefits. We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual benefits.
  • It is a very good, very rare business partners, looking forward to the next more perfect cooperation!
    5 Stars By Louise from Rio de Janeiro - 2018.03.03 13:09
    The factory can meet continuously developing economic and market needs, so that their products are widely recognized and trusted, and that's why we chose this company.
    5 Stars By Caroline from Greek - 2018.09.21 11:01
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