JPF, BTK-V, MTF, WHF, BLK/WTF, CNF
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1 Rolled Models JPF, BTK-V, MTF, WF, BLK/WTF, CNF and BNT Point of Selection Options Model No. Precautions on Use Accessories for Lubrication Mounting Procedure and Maintenance A A B Lead Angle Accuracy Accuracy of the Mounting Surface Axial Clearance Maximum Length of the Screw Shaft DN Value Support Unit Recommended Shapes of Shaft Ends Dimensions of Each Model with an Option Attached A A A A A
2 Rolled Structure and Features TK Rolled s are low priced feed screws that use a screw shaft rolled with high accuracy and specially surface-ground, instead of a thread-ground shaft used in the Precision s. The ball raceways of the ball screw nut are all thread-ground, thus to achieve a smaller axial clearance and smoother motion than the conventional rolled ball screw. In addition, a wide array of types are offered as standard in order to allow optimal products to be selected according to the application. Achieves Lead Angle Accuracy of Class C7 s with travel distance error of classes C7 and C8 are also manufactured as the standard in addition to class C10 to meet a broad range of applications. Travel distance C7 : 0.05/300 (mm) C8 : 0.10/300 (mm) C10 : 0.21/300 (mm) (For maximum length of screw shaft by accuracy grade, see A.) Achieves Roughness of the Ball Raceways of the Screw Shaft at 0.20 a or Less The surface of the screw shaft s ball raceways is specially ground after the shaft is rolled to ensure surface roughness of 0.20 a or less, which is equal to that of the ground thread of the Precision Ball Screw. The Ball Raceways of the Nut are Finished by Grinding TK finishes the ball raceways of Rolled nuts by grinding, just as the Precision Ball Screws, to secure the durability and the smooth motion. Low Price The screw shaft is induction-hardened or carburized after being rolled, and its surface is then specially ground. This allows the rolled to be priced lower than the Precision with a ground thread. Effects of high levels of dustproofing The ball screw nut is incorporated with a compact labyrinth seal or a brush seal. This achieves low friction, high dust-prevention effect and a longer service life of the.
3 Types and Features Preload Type Model JPF This model achieves zero-backlash through a constant preloading method by shifting the phase, with the central part of the nut as a spring structure. The constant preload method allows the ball screw to absorb a pitch error and achieve a smooth motion. Specification Table Axial clearance: 0 or less Direction of applied load The direction of the applied load during use must be in the recommended loading direction indicated in the fi gure. If a load is applied in the opposite direction, it may cause the spring structure to fracture, and therefore, the applied load must be 0.1 Ca or less during use. Recommended loading direction Spring structure Applied preload Applied preload No Preload Type Model BTK-V Specification Table This Rolled feed achieves a DN value of 100,000 by using a new circulation structure. Since the nut outer and the mounting holes of this model are dimensionally interchangeable with the previous model BTK, model BTK can be replaced with this model.
4 Rolled Model MTF A miniature type with a screw shaft of 6 to 12 mm and a lead of 1 to 2 mm. Specification Table Model WF This for high-speed feed achieves a DN value of 100,000 by using a new circulation structure. Since the nut outer and the mounting holes of this model are dimensionally interchangeable with the previous model WTF, model WTF can be replaced with this model. (WF1530, WF2040 and WF2550) Specification Table Models BLK/WTF Using an end-cap method, these models achieve stable motion in a high-speed rotation. Specification Table
5 Model CNF With a combination of 4 rows of large-lead loaded grooves and a long nut, a long service life is achieved. Specification Table Square Nut Model BNT Since the mounting screw holes are machined on the square ball screw nut, this model can compactly be mounted on the machine without a housing. Specification Table
6 Rolled
7 Preload Type of Rolled outer 14 to 40 Lead 4 to 10 A (Greasing hole) 60 JPF Screw shaft outer Lead Model No. Ball center-tocenter Thread minor No. of loaded circuits Basic load rating Ca C 0 a Outer d Ph dp dc Rows turns kn kn D 4 JPF JPF JPF JPF JPF JPF JPF JPF JPF JPF JPF Note) The ball screw nut and the screw shaft of model JPF are not sold separately. The basic load rating corresponds to the recommended loading direction. If a load is applied in the opposite direction, the value must be 0.1 x Ca or less during use (see ). Model number coding JPF RR +500L C7 T Model number Overall screw shaft length (in mm) Seal symbol (*1) Accuracy symbol (*2) Symbol for rolled shaft (*1) See. (*2) See A.
8 Rolled h d2 d1 D1 dp Dg6 D2 dc d B2 JPF Flange Outer Overall length Nut dimensions Greasing hole inertial moment/mm Nut Unit: mm Shaft D 1 D 2 L 1 B 1 B 2 d 1 d 2 h A kg cm 2 /mm kg kg/m M M M M M M M M M M PT 1/ Options
9 No Preload Type of Rolled 2- d1 outer 6 to 16 Lead 1 to 30 D1 dp dc d D 4- d1 MTF D1 dp Dg6 dc d A (Greasing hole) 4- d1 BLK D1 dp Dg6 dc d A (Greasing hole) WF/WTF Screw Lead Ball Basic load rating Rigidity shaft center-tocenter Thread No. of outer Model No. minor loaded circuits Ca C 0 a K Outer Flange d Ph dp dc Rows turns kn kn N/ m D D MTF MTF MTF BTK 1006V MTF BTK 1208V BTK 1405V BTK 1404V BLK WTF WTF WTF WTF WF CNF BTK 1605V BLK BLK Note) Model MTF cannot be attached with seal. Model MTF is only sold as sets (ball screw nut and screw shaft). Model MTF is applied only with anti-rust oil. WF is available on a made-to-order basis. If planning to use this model, contact TK.
10 510E Rolled 6- d1 D1 dp Dg6 dc d A (Greasing hole) CNF 4- d1 A (Greasing hole) D1 dp dc d Dg6 BTK-V Overall length Nut dimensions Greasing hole Seal Axial clearance Standard shaft length inertial moment/mm Nut Unit: mm Shaft L 1 B 1 d 1 T W N 1 A M 1 kg cm 2 /mm kg kg/m , , M M M M M M , M M M M M M Options
11 No Preload Type of Rolled 4- d1 outer 18 to 30 Lead 5 to 60 D1 dp Dg6 dc d A (Greasing hole) WF2020,2525/BLK 4- d1 D1 dp Dg6 dc d A (Greasing hole) WF2040,2550/WTF Screw shaft outer Lead Model No. Ball center-tocenter Thread minor No. of loaded circuits Basic load rating Rigidity Ca C 0 a K Outer Flange d Ph dp dc Rows turns kn kn N/ m D D BTK 1808V BTK 2005V BTK 2010V WF BLK BLK WTF WTF WF CNF BTK 2505V BTK 2510V WF BLK BLK WTF WTF WF CNF BTK 2806V BTK 2806V WTF WTF CNF Note) WF is available on a made-to-order basis. If planning to use this model, contact TK.
12 510E Rolled 6- d1 D1 dp Dg6 dc d A (Greasing hole) CNF 4- d1 A (Greasing hole) D1 dp dc d Dg6 Overall length Nut dimensions Greasing hole BTK-V Seal Axial clearance Standard shaft length inertial moment/mm Nut Unit: mm Shaft L 1 B 1 d 1 T W N 1 A M 1 kg cm 2 /mm kg kg/m M , M M M M M , 1000, M M M M M M M M M , 1500, M M M M M , 1000, M , M , 2000, M , M Options
13 No Preload Type of Rolled outer 32 to 50 Lead 10 to d1 D1 dp Dg6 dc d A (Greasing hole) BLK Screw shaft outer Lead Model No. Ball Thread center-tocenter minor No. of loaded circuits Basic load rating Rigidity Ca C 0 a K Outer Flange d Ph dp dc Rows turns kn kn N/ m D D 1 BTK 3210V BTK 3210V BLK BLK BTK 3610V BTK 3610V BLK BLK BLK BLK BTK 4010V BLK BLK WTF WTF BTK 4512V BTK 5016V BLK BLK WTF WTF
14 510E Rolled 4- d1 D1 dp Dg6 dc d A (Greasing hole) WTF 4- d1 A (Greasing hole) D1 dp dc d Dg6 Overall length Nut dimensions BTK-V Greasing hole Seal Axial clearance Standard shaft length inertial moment/mm Nut Unit: mm Shaft L 1 B 1 d 1 T W N 1 A M 1 kg cm 2 /mm kg kg/m M , 1000, M , M , 1500, M , M , 1000, 2000, M , M M , 1500, M , M M6 1000, 1500, 2000, , M M , 1500, M , M M , 1500, 2000, PT 1/ , M M , 1500, M , M Options
15 No Preload Type of Rolled (Square Nut) W1 W B 4-S l outer 14 to 45 Lead 4 to 12 M MAX F T N2 A (Greasing hole) BNT Screw shaft outer Lead Model No. Ball Thread centerto-center minor No. of loaded circuits Basic load rating Rigidity Ca C 0 a K Width Center height d Ph dp dc Rows turns kn kn N/ m W F L 1 14 Overall length 4 BNT BNT BNT BNT BNT BNT BNT BNT BNT BNT BNT BNT BNT BNT BNT
16 Rolled C dp dc d BNT Mounting hole Nut dimensions Axial clearance inertial moment/mm Nut Unit: mm Shaft B C S l W 1 T M N 1 N 2 A kg cm 2 /mm kg kg/m M M M M M M M M M M M M M M M M M M M M M M M M M M M Options
17 Model Number Coding Model number coding Nut BTK1405V-2.6 ZZ Model number Seal symbol no symbol: without seal ZZ: brush seal attached to both ends of the ball screw nut (see ) Screw Shaft TS L C7 Accuracy symbol (see A ) (no symbol for class C10) Overall screw shaft length (in mm) Lead (in mm) outer (in mm) Symbol for rolled ball screw shaft Combination of the Nut and the Screw Shaft BTK1405V-2.6 ZZ +500L C7 T Model number Symbol for rolled shaft Accuracy symbol (see A ) (no symbol for class C10) Overall screw shaft length (in mm) Seal symbol no symbol: without seal ZZ: brush seal attached to both ends of the ball screw nut (see ) Rolled model JPF JPF RR G0 +500L C7 T Model number Symbol for rolled shaft Accuracy symbol (see A ) (no symbol for class C10) Overall screw shaft length (in mm) Axial clearance symbol Seal symbol no symbol: without seal RR: Labyrinth seal attached to both ends of the ball screw nut (see )
18 Rolled
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