Ball Screw Assemblies

Transcription

1 Ball Screw Assemblies ECO-Line The Drive & Control Company

2 Ball Screw Assemblies Product Overview ECO-Line Ball Screw Assemblies ECO-Line Ball Screws are available from stock as complete assemblies, with screw-in or flanged nuts. The prefabricated end machining makes an easy combination with the fixed bearing (support block with bearing) LGL as a complete package possible. The load capacity of the support bearing is critical. By friction welding the bearing journal we were able to enlarge smaller screw diameters and increase the load capacity. This can simplify the choices for many customer specific transport applications. The construction and ordering process for new applications can also be handled more effectively. Relaxed tolerances provide economical solutions. Every nut is assembled with clearance. The flanged nut comes standard with seals; the screw-in version offers seals as an option. The ECO-Line Series is intended to be a very cost effective solution. End bearing LGL The end bearing LGL with angular contact ball bearing in an "X" arrangement makes an ideal accessory. High load capacity Very easy mounting with the flanged housing Corrosion resistant housing Seals provide protection from contaminants Simple preload of the fixed bearing Maintenance free for most application due to the large lubricant reservoir with initial greasing Economical turnkey solutions made easy. 2

3 Seals are optional Screw-in Type Nut High axial load capacity Flange Nut with seals as standard Bearing and Slotted Nut optional From stock 3

4 Ball Screw Assemblies With Screw-in Single Nut ECO-Line Screw-in Single Nut ZEV-E-S with Rexroth mounting dimensions Without seals With backlash Screw tolerance class T10 P D W i = Nominal diameter = Lead (R = Right, L = Left) = Ball diameter = No. of turns Undercut Form F DIN 509 Threat undercut DIN 76 short Undercut Form E DIN 509 Size Part No. Basic load rating Max.Speed L Ges L Gew dyn. stat. d x P x Dw - i C C 0 0 v max (N) (N) [m/min] 12 x 5R x x 10R x x 5R x x 10R x x 5R x Ordering Code Screw End Form 81 Screw End Form 83 ZEV-E-S 12x5Rx T10 R 83K121 00K ZEV-E-S 12x10Rx T10 R 83K121 00K ZEV-E-S 16x5Rx T10 R 83K122 00K ZEV-E-S 16x10Rx T10 R 83K122 00K ZEV-E-S 20x5Rx T10 R 81K122 00K D 2 DT2 L 2 G 1 LG 1 L ZF DT1 Friction-welded L ZF L 1 DR L R DF L F 4

5 D 8 Hole for hook wrench L Gew L Ges LMut D w d2 D 4 G1 d1 Nut Dimensions (mm) L 7 L 15 Lube hole D 4 D 8 G 1 L Mut L 7 L 15 h10 ±0,3 Size Form Version Screw Dimensions (mm) Backlash (mm) 25,5 2,7 3,2 M20 x ,5 10 0,1 25,5 2,7 3,2 M20 x ,5 10 0,1 32,5 2,7 4,2 M26 x 1, ,5 12 0,1 32,5 2,7 4,2 M26 x 1, ,5 12 0,1 38 2,7 8 M35 x 1, ,5 14 0,1 P d 1 d 2 L ZF D R L R D F L F DT1 L 1 D 2 DT2 L 2 G 1 LG ,4 9, , h h7 25 M12x ,4 9, , h h7 25 M12x ,0 12, , h h7 25 M12x ,0 12, , h h7 25 M12x ,0 16, h h7 25 M12x1 18 5

6 Ball Screw Assemblies With Single Nut with Flange ECO-Line Single Nut FBZ-E-S with Flange with Rexroth mounting dimensions with seals with backlash Screw tolerance class T10 P D W i = Nominal diameter = Lead (R=Right, L=Left) = Ball diameter = No. of turns Undercut Form F DIN 509 Threat undercut DIN 76 short Screw End Form 81 Undercut Form E DIN 509 Size Part number Basic load rating Max. Speed dyn. stat. x P x Dw - i C C 0 v max (N) (N) [m/min] 20 x 5R x x 5R x x 10R x x 5R x 3, x 10R x 3, Ordering Code FBZ-E-S 20x5Rx T10 R 81K122 00K FBZ-E-S 25x5Rx T10 R 81K151 00K FBZ-E-S 25x10Rx T10 R 81K151 00K FBZ-E-S 32x5Rx3, T10 R 81K204 00K FBZ-E-S 32x10Rx3, T10 R 81K204 00K D 2 DT2 L 2 G 1 LG 1 L ZF DT1 L 1 L Ges L Gew 6

7 +0,7 D1 L L Ges Gew Plastic recirculation cap D1 L 5 L 3 L 4 L Lube hole L 10 Nut Dimensions (mm) Plastic recirculation cap D 5 D 6 D 7 L L 3 L 4 L 5 L 10 S ϕ ±0,5 ( ) , M , ,5 16,5 M , M , M , M6 30 Size Form Version Screw Dimensions (mm) 0,05 0,1 5 D P d 1 d 2 L ZF D R L R D F L F DT1 L 1 D 2 DT2 L 2 G 1 LG ,0 16, h h7 25 M12x ,0 21, h h7 25 M15x ,0 21, h h7 25 M15x ,0 28, h h7 40 M20x ,0 27, h h7 40 M20x1 15 D 6 D 7 D w S d2 6x60 d1 ϕ 7

8 Ball Screw Assemblies Bearing LGL Fixed bearing with Angularcontact thrust ball bearing LGL Suitable for Screw End Forms on page 4-7 Size Angular-contact thrust ball bearing Slotted Nut Load ratings (axial) dyn. stat. d x P C C o o Part number Designation (N ) (N) Designation Part number 12x5/ LGL-A NMG 12x x5/ LGL-A NMG 12x x LGL-A NMG 12x x5/ LGL-A NMG 15x x LGL-A NMG 20x

9 B H Dimensions (mm) d D d 2 ø 0,2 Weight bearing d D A 1 A 2 n m H B d 2 (kg) +0,03-0,01-0, , ,6 0, , ,6 0, , ,6 0, , ,6 0, , ,6 0,30 m n A 1 2 A 9

10 Ball Screw Assemblies Acceptance Conditions and Tolerance Grades Permissible travel deviation simillar to DIN , Part 3 and ISO Symbol definitions l 0 = Nominal travel l 1 = Thread length l 0 = Travel deviation l u = Useful travel l e = Excess travel c = Travel compensation for useful travel, defined by use (standard: c = 0) e p = Tolerance for actual mean travel deviation ν up = Permissible travel variation within useful travel l ν 300p = Permissible travel deviation within 300 mm travel ν 2πp = Permissible travel deviation within 1 revolution Subindices: p = Permissible a = Actual Improved values Values are more accurate than those defined in DIN , Part 3 and ISO (tolerance reduced by half). Ball screw with Rolled Precision Screw SN-R l e + l 0 - lu e p 300 ν l 1 l u 300p 300 Tolerance grade T10 ν 300p ν 300p = 210 µm l e l 0 ep ep c = 0 10

11 Run-outs and location deviations based on DIN , Part 3 and ISO Radial run-out t 5 of the outer diameter of the ball screw shaft over the length l 5 used to determine the straightness in relation to AA. Radial run-out t 6 of the bearing diameter in relation to AA for l 6 l. Where l 6 > l then t 6a t 6a l 6a l Coaxial deviation t 7 of the journal diameter of the ball screw shaft in relation to the bearing diameter for l 7 l. Where l 7 > l then t 7a t 7a l 7a l Axial run-out t 8 of the shaft (bearing) face of the ball screw shaft in relation to the bearing diameter. l 7 t 6p AA 2 l 6 l5 l5 l5 2 l 1 t 5p A t 8p C l5 l5 C Bearing seat A A t 7p C t 5 max t 5p AA A A d C A Bearing Seat Lagersitz 2 F t 5p in for l 5 l 5 for tolerance grade 10 über bis above up to = Nominal diameter above up to Nominal diameter above up to Ref. length Ref. length l l t 6p in µm for 6 l for tolerance grade t 7p in µm for l 7 l for tolerance grade 10 = above t 8p in µm Nominal for tolerance grade 10 diameter up to t 5max in µm l 1 / for l 1 4l 5 for tolerance grade 10 above up to =

12 Bosch Rexroth Corporation Linear Motion and Assembly Technologies South Lakes Drive Charlotte, NC Phone: Fax: Bosch Rexroth Corporation 5150 Prairie Stone Parkway Hoffman Estates, IL Phone: Fax: Bosch Rexroth Corporation Industrial Hydraulics 2315 City Line Road Bethlehem, PA Phone: Fax: Bosch Rexroth Corporation Electric Drives and Controls 5150 Prairie Stone Parkway Hoffman Estates, IL Phone: Fax: Bosch Rexroth Corporation Pneumatics 1953 Mercer Road Lexington, KY Phone: Fax Bosch Rexroth Corporation Mobile Hydraulics P.O. Box Old Mansfield Road Wooster, OH Phone: Fax: Printed In The United States RA Eco-Line