The advantages of Timken ® Fafnir ® ball screw support bearings (MMN/MMF series) are as follows:
Advantage 1 : Longer service life - the pair of low-torque integral seals resists impurities and extends bearing life in demanding operating environments. The bearings are lubricated prior to packaging and can be relubricated during use.
Advantage 2 : High load capacity - The double row design supports axial and bidirectional loads. The internal raceway space allows for more balls to accommodate load carrying capacity. Consistent preload for precise repetitive positioning - precise positioning of the bearing's double inner and outer rings and the cage by using a precision locknut on the shoulder to achieve precise preload.
Advantage 3 : Ultra-precision—ABEC 9/ISO P2 axial running tolerance reduces runout and improves positioning accuracy. Strictly controlled width tolerances and smooth running torsion improve system stability and performance.
Advantage 4 : Stronger hardness—The bearing combines a 60 degree contact angle with maximum ball holding capacity for superior axial stiffness and precision.
Advantage 5 : Higher speed - Heavy duty NLG1#2 lubricant provides excellent speed performance. Ceramic balls and specialty lubricants are available to dramatically increase speed and acceleration levels.
Advantage 6 : Simple and flexible installation – whether it is a fixed nut or a rotary nut design, the integral bearing unit with built-in seal simplifies installation. The flange unit does not require external clamping.
Advantage 7 : No need to grind end caps (MMN) - strict width tolerances (5 times higher than the ABEC 9/ISO P2 standard) and markings made in the width of each bearing row eliminates the need for end cap grinding. Increased productivity while reducing assembly costs.
Timken ® Fafnir ® Ball Screw Support Bearing
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