STAR – Precision Ball Screw Assemblies

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STAR – Precision Ball Screw Assemblies Product Overview As simple as it is to describe the elementary function of a precision ball screw assembly, in practice you are faced with variety of types and applications. Affordable system design is now easier then ever: New products have made the catalogue grow in size. On the following pages you will find the various elements for you to choose from, complete with order specifications and examples. A further new development is the WINKGT calculation software for designing and calculating precision ball screw assemblies. Written to run under the Windows NT operating system, it is available on CD-ROM for you to perform your own calculations. Alternatively, you can arrange for Rexroth STAR to produce a design calculation on your behalf. To do so, simply complete and return the inquiry form, ! see “Inquiry / Order Form”, on page 103. For over 20 years, Precision Ball Screw Assemblies have been a core product group within the STAR range. The related standards (DIN 69 051 and ISO 3408) are fully supported by Rexroth STAR. For every STAR nut with flange in this catalog you will therefore find a corresponding design with DIN mounting dimensions. STAR – Precision Ball Screw Assemblies provide technical designers with diverse solutions for positioning and transport tasks: – complete ball screw assemblies with precision-rolled or ground thread screws combined with any of the available single or double nuts – precision-rolled screws of optional length, with soft-annealed ends and ground-thread ECO screws in grid lengths for end machining by the customer – single nuts supplied on a mounting tube; all single nuts in the version with reduced backlash can be easily mounted by the customer. In addition, the adjustable-preload single nut allows the customer to perform preload adjustment in-house. – matching nut housings and end bearings Precision-rolled screws are manufactured independently of customers orders. Our large world-wide stocks guarantee a fast response. Availability is one advantage, low prices another. To perform particularly demanding positioning tasks we have developed a measuring system for integration in the rails of ball and roller rail systems (Catalog R.82 350). The linear measuring system in the rail then replaces the positioning information in the ball screw. This way we are able to achieve a maximum of flexibility in design and a maximum of precision in operation. Each nut is manufactured with the same technology, enabling it to be used in the high-precision range too. Nuts are available ex stock from a large cataloged range covering different mounting dimensions and technical details. 6 RE 83 301/12.99
Short nut length Available ex stock High load-carrying capacity due to large number of recirculating balls Smooth outer shell, consistently smooth operation due to internal ball recirculation system RE 83 301/12.99 7 Particularly smooth motion due to the tangential lift-off of the balls from the raceway within a single, fully enclosed ball circuit in the nut Effective wiping sealing No protruding parts, nut is easily mounted Adjustable-preload single nut
Page 1 and 2: RE 83 301/12.99 STAR - Precision Ba
Page 3 and 4: STAR - Precision Ball Screw Assembl
Page 5: End machining details Bearings LAF
Page 9 and 10: High axial load capacity Low fricti
Page 11 and 12: RE 83 301/12.99 11 Folding press La
Page 13 and 14: Nut types All nuts can be combined
Page 15 and 16: Order Code Precision Ball Screw Ass
Page 17 and 18: Ball screw with annealed ends For m
Page 19 and 20: D 5 Lube port at flange center L 3
Page 21 and 22: D 5 D 1 +0.7 L 5 L 3 L N.B.: On a p
Page 23 and 24: Lube port at flange center D5 +0.7
Page 25 and 26: Lube port at flange center L5 D5 D1
Page 27 and 28: L 11 RE 83 301/12.99 27 L L 6 L 7 L
Page 33 and 34: H 1 6x60° D 1 RE 83 301/12.99 33 E
Page 35 and 36: H 1 90° D 1 2 x B RE 83 301/12.99
Page 37 and 38: Friction-welded blanks made of prec
Page 39 and 40: Area of application The STAR - Grou
Page 41 and 42: Screw End Form 00, End not Annealed
Page 43 and 44: End Bearings for Screw Ends Form 01
Page 57 and 58:
End Bearings for Screw Ends Form 71
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
H 2 D B 6 B 2 B RE 83 301/12.99 63
Page 65 and 66:
H 2 D d B 2 B D 1 RE 83 301/12.99 6
Page 67 and 68:
B1 H1 H2 B4 B4 H4 H3 B2 S3 L3 L2 2
Page 69 and 70:
H1 H2 H4 H3 B1 RE 83 301/12.99 69 L
Page 71 and 72:
D D LGF-B-… LGF-A-… with slotte
Page 73 and 74:
D D LGN-B-… LGN-A-… with slotte
Page 75 and 76:
Dimensions (mm) Weight complete d D
Page 77 and 78:
Housing nut GR - for angular contac
Page 79 and 80:
Load-carrying capacities and servic
Page 81 and 82:
Symbol definitions (excerpt): l0 =
Page 83 and 84:
Axial run-out t 8 ´ of the shaft (
Page 85 and 86:
Overall Rigidity The rigidity of a
Page 87 and 88:
Screws with single nuts 2% preload
Page 89 and 90:
R nu (N/µm) Screws with double nut
Page 91 and 92:
Inserting the wiper-type seal Posit
Page 93 and 94:
For NLGI 2-greases: The nut has to
Page 95 and 96:
Calculation Example Service life Op
Page 97 and 98:
Permissible axial load on screw F k
Page 99 and 100:
Lubrication, Mounting the Housing M
Page 101 and 102:
Average speed and average bearing l
Page 103 and 104:
Rexroth Star GmbH D-97419 Schweinfu
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STAR – Precision Ball Screw Assemblies

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