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Text version of the page
6
S99TE14-0710(2) Type of nuts
The type of nuts to select depends on the application requirements. HIWIN standard nuts are classified by three letters as follows (see also Chapter 5 for details):Flange Type (F) Round Type (R) Single-Nut (S) Double-Nut (D) Single-Nut (S) Double-Nut (D) Internal Return Cap (I) External Return Tube Endcap (H) Internal Return Cap (I) External Return Tube Endcap (H) Tube within the Nut Dia. (W) Tube above the Nut Dia. (V) Tube within the Nut Dia. (W) Tube above the Nut Dia. (V) RDI means round type, double nut with internal return caps. FSW means flange type, single nut with external return tube within the nut diameter. DFSV means two-start, flange, single nut with external return tube above the nut diameter. * Other types of nut shape can also be made upon your design.• The special high-lead double-start nut is classified by adding D in front of the above three letters. • The compression preload nut is classified by adding P in front of the above three letters. • The offset pitch preload single nut is classified by adding O in front of the above letters. Examples :
(3) Number of circuits
For the internal type design: The HIWIN nomenclature for the number of circuits in the ballnut is described as follows: T : 1.0 turn per circuit For the external type design: For end cap type design: For Super S Series: A : 1.5 turns per circuit B : 2.5 turns per circuit C : 3.5 turns per circuit D : 4.5 turns per circuit E : 5.5 turns per circuit U : 2.8 turns per circuit (high lead) S : 1.8 turns per circuit (super high lead) V : 0.7 turns per circuit (extra high lead) K : 1 turn per circuitExample :B2 : designates 2 external return tube ball circuits. Each circuit has 2.5 turns.T3 : designates 3 internal return ball circuits. Each circuit has a maximum of 1 turn.S4 : designates 4 internal return ball circuits. Each circuit has 1.8 turns.K5 : designates 5 internal return ball circuits. Each circuit has 1 turn. HIWIN recommends that number of circuits for the external type design be 2 for 2.5 or 3.5 turns ( that is, B2 or C2), and 3, 4 or 6 circuits for the internal type. Those shapes are shown in Fig. 3.4 and Fig. 3.5.Fig 3.4 Circuit for external return tube Fig 3.5 Circuit for internal return cap