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      HYBRID BEARINGS

      Hybrid angular contact ball bearings (designation suffix XHC) have rings made of bearing steel and rolling elements made of bearing grade silicon nitride (ceramic). As ceramic balls are lighter and ha

      Contact

      Hybrid angular contact ball bearings (designation suffix XHC) have rings made of bearing steel and rolling elements made of bearing grade silicon nitride (ceramic). As ceramic balls are lighter and have a higher modulus of elasticity and lower coefficient of thermal expansion than steel balls, hybrid bearings can provide the following advantages:

      · higher degree of rigidity

      · higher speed capability

      · reduced centrifugal and inertial forces within the bearing

      · minimized stress at the outer ring rolling contacts at high speeds

      · reduced frictional heat

      · less energy consumption

      · extended bearing and grease service life

      · less prone to skid smearing damage and cage damage when subject to frequent rapid starts and stops

      · less sensitive to temperature differences within the bearing

      · more accurate preload/clearance control 

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      Deep Groove Ball Bearings

      Hybrid angular contact ball bearings (designation suffix XHC) have rings made of bearing steel and rolling elements made of bearing grade silicon nitride (ceramic). As ceramic balls are lighter and have a higher modulus of elasticity and lower coefficient of thermal expansion than steel balls, hybrid bearings can provide the following advantages:

      Hybrid angular contact ball bearings, Hybrid angular contact ball bearings follow ISO standards and are dimensionally interchangeable with competitor metric products.
      Premium Lubricants

      For reduced torque and a quieter operation, Mobil Polyrex? EM premium lubricant comes standard on all DIMSEN sealed and Hybrid angular contact ball bearings. This grease has a temperature range from -29° C to 177° C.
      Brass Cage Availability

      Hybrid angular contact ball bearings with brass cages (available in select sizes) can deliver extra strength and durability in the most unrelenting conditions: extreme shock loads, high vibrations and high forces due to acceleration.
      Quiet Running for Electric Motor Quality

      Hybrid angular contact ball bearings are frequently used in electric motor applications to minimize vibration and noise. To meet our long-standing electric motor quality guidelines we designed in:

          Super finishing on raceways to reduce friction
          Preferred clearance designation (C3)
          Premium grease for high performance, low torque and less noise

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      Precision

      Precision ball bearings are used for high precision applications in a variety of markets, including aerospace, health, machine tool, robotics and general industry.
      MM/MMV (Machine Tool Bearings)

      Super precision bearings manufactured to MM/MMV tolerances combine the accuracy and performance of ABEC 9/ISO P2 with the non-critical features of ABEC 7/ISO P4 levels for cost effectiveness.
      MMX (Machine Tool Bearings)

      Type MMX super precision bearings are made to ABEC 9/ISO P2 levels and have closer tolerances and running accuracies than ABEC 7/ISO P4 tolerances. Ideal for ultra-high speed grinding spindles designed for tight dimensional tolerances and super-fine surface finishes.
      HX (Machine Tool Bearings)

      Type HX delivers excellent running accuracy and are manufactured to precise ABEC9 (ISO P2) levels for runout tolerances.
      Ceramic Ball Bearings

      Ceramic hybrid angular contact ball bearings combine steel rings with ceramic rolling elements to deliver higher spindle speeds and increased dynamic radial stiffness.
      Ball Screw Support Bearings

      Ball screw support bearings are available in single- and double-row configurations and are widely used in motion control applications.
      Miniature & Instrument Bearings

      Miniature and instrument bearings are used in medical and industrial handpieces and other precision applications. Ball bearing designs include radial, angular contact, thrust and pivot.
      Thin Section Bearings

      Thin section bearings are available in radial, angular contact and fractured race designs and are used in precision applications such as gimbals, rotary joints and robotics.
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      Angular Contact Ball

      SILENCE DIMSEN? angular contact ball bearings are designed for combination radial and axial loading. Single-row bearings have high thrust capacity in one direction. Some single-row bearings are specifically designed for duplex mounting in sets for maximum performance. Double-row Conrad bearings can accommodate thrust in both directions.
      Size Range:

      Single-row: 10 mm – 150 mm (0.3937 in. – 5.9055 in.) bore
      Double-row: 12 mm – 150 mm (0.4724 in. – 5.9055 in.) bore
      Design Attributes:

          Specific geometry of angular contact bearing raceways and shoulders creates ball contact angles that support higher axial loads.
          Expanded options include special lubricants, cage materials, preloads and coatings for additional corrosion resistance.

      Applications:

      Angular contact ball bearings are engineered for use in high-speed, high precision applications for:

          Agriculture
          Chemical
          General industry
          Utilities

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      Ball Screw Support Bearing

      Our broad line of SILENCE DIMSEN? ball screw support bearings includes single- and double-row designs with a variety of mounting configurations. We offer flanged and non-flanged series for both standard and rotating nut mountings. Housed cartridge and pillow block units facilitate bolting to machine tool surfaces.
      Design Attributes:

          Materials include clean steel for longer service life.
          Incorporates tighter preload tolerances for chatter-free cutting and tighter width tolerances for easy fit without regrinding end caps.
          Innovative cage design permits additional balls for higher load capacity.
          Features ABEC 9/ISO P2 axial running tolerances to deliver maximum accuracy for precise tool positioning and repeatability.
          Double-row series has integral, low-torque contact seals to exclude contaminants for reliable operation and extended service life.
          Available in flanged (MMF) and nonflanged (MMN) series, simplifying installation for both standard and rotating nut mountings.

      Applications:

          Motion control for grinding, milling and machining centers

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      Cross Roller (XMB) Taper Rollers

      Precision crossed roller bearings (TXM) are designed to offer the highest levels of rotational accuracy and rigidity while conserving space and saving material costs. The bearing features two sets of races and rollers brought together at right angles with alternate rollers facing in opposite directions. This allows two half-rows of rollers to fit into the space of one. The steep-angle, tapered geometry results in a total effective bearing spread much greater than the width of the bearing itself.

      Able to withstand high overturning moments, the crossed roller bearing is ideal for the table bearing of machine tools, including vertical boring and grinding machines. It is uniquely suited to many other pivot and pedestal applications where space is limited or the lowest possible center of gravity of a rotating mass is required.
      Size range:

      ID 203.200 mm to 2463.800 mm (8.000 in. to 97.000 in.)
      OD 279.400 mm to 2819.400 mm (11.000 in. to 111.000 in.)
      Design Attributes:

          Provides benefits of two-row bearings in single-row space.
          Withstands high overturning moments.
          Combines the compactness of a single-row bearing with the stability of a two-row bearing.

      Applications:

          Vertical boring mills
          Vertical grinding machines
          Other machine tools

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      Precision Cylindrical Roller Bearings for Machine Tool

      Our precision cylindrical roller bearings for screw drives feature a combination of axial cylindrical rollers and radial needle rollers. This unique configuration helps manage loads from multiple directions during highspeed operation. Several designs are available to accommodate varying screw drive designs.

      For applications where rotational accuracy, consistency and rigidity are critical, Timken has the solution – SILENCE DIMSEN? precision cylindrical roller bearings for rotary tables, indexing and vertical mill heads.
      Precision Cylindrical Roller Bearings for Rotary Tables

      We incorporate our engineering expertise into every product to enhance performance and productivity. Our precision cylindrical roller bearings for rotary tables are no exception. When rotational accuracy, consistency and rigidity in rotary tables are critical, SILENCE DIMSEN precision cylindrical roller bearings become the obvious solution.

      For applications where rotational accuracy, consistency and rigidity are critical, Timken has the solution – SILENCE DIMSEN? precision cylindrical roller bearings for rotary tables, indexing and vertical mill heads.

      Timken’s precision cylindrical roller bearings feature an integrated design that includes an L-shaped inner ring, shaft washer, outer ring, two thrust roller cage assemblies and a radial full complement row. The result? An easy-to-install unit that can manage loads from multiple directions. Superior running accuracy, lower operating temperature and reduced noise through P4 precision class.
      Product Details

          Greater load-carrying capacity and better bearing stiffness control, thanks to closely controlled preload
          Oil lubrication standard, with grease lubrication available
          Potential for increased axial stiffness with an optional thrust washer
          Bore sizes ranging from 80mm (3.149 in.) to 460mm (18.110 in)

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