Large lead series High-Speed Ball Screw with Caged Ball DN value: 210,000 (Achieves high-speed feed at 200 m/min) High-Speed feed by a large lead Low noise, long-term maintenance-free operation TOKYO. JAPAN

High-Speed Ball Screw with Caged ball technology Fig.1 Structure of large lead SBK type Circulate toward the Circulate toward the tangential direction lead-angle direction Fig.2 Ball circulation structu High-Speed Ball Screw with Caged Ball model SBK, balls are evenly spaced by a ball cage to eliminate collision and friction between the balls and ensure a high level of grease retention. As a result, low noise, high-speed fluctuation and long-term maintenance-free In addition, this model has an ideal circulation structure where balls are picked up at the tangential direction (Fig. 2), thus to...

Features ●Superbly High Speed Use of a circulation structure in which balls are picked up in the tangential direction and the lead-angle direction by end caps (Fig. 3) enables the Ball Screw to be used in high speed operation at a DN value of 210,000, thus to achieve highspeed feed 200m/min faster than the conventional type. ●Smooth Motion Use of a ball cage eliminates friction between balls (Fig. 5) and minimizes torque fluctuation, thus allowing smooth motion to be achieved. ●Long-Term Maintenance Free Operation Increased grease retention through formation of grease pockets (Fig. 5) ensures...

■ High Speed & Load Durability A large lead SBK type uses a new re-circulation tube and caged ball technology to achieve smooth circulation which maintains high speed and improved load durability. High speed durability test Test condition Test result No problems after 5000km travel Load durability test Test condition Test result Operated for 2.5 times estimated life span without a problem (Currently in operation) A large lead SBK type uses caged ball technology, so it is possible to get smoother rotation compared to conventional types.

A large lead SBK type maintains quiet operation under high-speed rotation by adopting caged ball technology that eliminates collisions of adjacent metal balls. Noise meter Test equipment

^Accuracy Standards High-Speed Ball Screw with Caged Ball Is manufactured with accuracy compliant with J IS B1192 (precision Ball Screw). This model can be manufactured with up to the maximum accuracy of CO grade. In terms of lead accuracy measurement, the lead accuracy is assured with a laser measurement machine, whose reliability is proven. For details of the standard values, see the General Catalog. O Static Safety Factor Basic Static Load Rating Coa If a Ball Screw receives an excessive load or a large impact load while it Is stationary or In motion, local permanent deformation occurs between...

Dimensional Table for Model SBK O Example of Model Number Coding © Model number (2) With QZ Lubricator (without QZ Lubricator: no symbol) © Seal symbol (RR: labyrinth seal on both ends; WW: wiper ring on both ends) © Axial clearance symbol © Overall screw shaft length (in mm) © Accuracy symbol

Note: The rigidity values In the table represent spring constants each obtained from the load and the elastic displacement when providing a preload 10% of the basic dynamic load rating (Ca) and applying an axial load three times greater than the preload. These values do not Include the rigidity of the components related to mounting the ball screw nut. Therefore, It Is normally appropriate to regard roughly 80% of the value In the table as the actual If the applied preload (Fao) Is not 0.1 Ca, the rigidity value (KN) IS obtained from the following equation. KN=K| Q^?a K : Rigidity value In the...

For model SBK, two options are available to achieve long-term maintenance-free operation. Specifically, they are QZ Lubricator for Ball Screws, which contains a highly oil-impregnated fiber net, and Wiper Ring, which is a contact seal for Ball Screws highly capable of removing foreign matter. QZ Lubricator is a new lubrication system capable of feeding the required amount of lubricant where it is needed. Highly oil-impregnated fiber net • Enables longer maintenance-free intervals Normally, a small amount of oil is lost from ball screws during operation. By adding the lubricator QZ, oil lost over...

The Ball Screw Nut Dimensions with the Wiper Ring (WW) and QZ Lubricator (QZ) Attached •QZWW (QZRR) *1 Full length dimensions with WW are normal full length and of the same size methods. *2 Being accompanied is dimensions same as QZWW a QZ+ labyrinth seal.

TfinlK High-Speed Ball Screw with Caged Ball Model SBK • Disassembling components may cause dust to enter the system or degrade mounting accuracy of parts. Do not disassemble the product. • Tilting the screw shaft and the ball screw nut may cause them to fall by their self-weights • Dropping or hitting the Ball Screw may damage the ball circulation section, which may cause functional loss. Giving an Impact to the product could also cause damage to Its function even If the product looks Intact. • Thoroughly remove anti-corrosion oil and feed lubricant before using the product. • Do not mix lubricants...