eline Ball Screw Assemblies

eline Ball Screw Assemblies R310EN 3314 (2005.06) The Drive & Control Company

R310EN 3314 (2005.06) Bosch Rexroth AG 3 Product Overview 4 Technical Data 6 with Screw-in Single Nut ZEV-E-S Single fixed stock, fixed length 10 with Single Nut with Flange FBZ-E-S Single fixed stock, fixed length 12 with Screw-in Single Nut ZEV-E-S Fixed stock, customer-specified length 14 with Single Nut with Flange FBZ-E-S Fixed stock, customer-specified length 16 Angular-contact thrust bearing unit with Groove nut, LAL series 18 Grooved Ball Bearing with Safety Ring, LAD series 20 Lubrication 21 Mounting 22

4 Bosch Rexroth AG R310EN 3314 (2005.06) Product Overview Product Background eline Ball Screws are available from stock as complete assemblies, with screw-in or flanged nuts. The pre-finished machining is easily combined with the fixed bearing LGL (support block with bearing) as a complete package. The eline products can simplify the choices for many customer-specified transport applications. The part number specification and ordering process for new applications can also be handled more effectively. Relaxed tolerances provide very economical linear motion solutions. Every nut is assembled with clearance. With seals. Cost savings are always a priority with the eline. The load capacity of the support bearing is critical. By friction welding the bearing forward, we were able to enlarge smaller screw diameters and increase the load bearing capacity.

R310EN 3314 (2005.06) Bosch Rexroth AG 5 Advantages With seals High axial load capacity From stock Flanged or screw-in nuts Bearing and slotted lock nut optional Angular-contact thrust bearing with Nut, LAL series The end bearing LGL with angular-contact ball bearing in an X arrangement makes an ideal accessory. Grooved Ball Bearing with Safety Ring, LAD series Storage with grooved Ball Bearings 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.

6 Bosch Rexroth AG R310EN 3314 (2005.06) Technical Data Speed v max = 1 m/s Dependant of size and lead Acceleration a max = 20 m/s 2 Dependant of size and lead Temperature Stability t = 0 to 80 C Temperature of surrounding environment Seal come with seals, if required. Horizontal Assembly Calculation (In connection with the corresponding direction) F m w mt F 1 =(m t + m w ) a + F m t = Table mass (N) m w = Work piece mass (N) a = Acceleration (m/s 2 ) Calculation of the Bearing Load F eq =F 1 k f F eq = Equivalent load k f = Working factors Recommended Operating Factors k f Operating Factors 0.8 Application BSA with manual operation 1.0 Clean environment applications 2.0 Secondary Axis for machine tools 4.0 Dirty environment applications To determine operational performance, calculate the relationship of F eq /C. With this value, you can read the operational performance and relubrication data in the following diagrams.

R310EN 3314 (2005.06) Bosch Rexroth AG 7 Operational Performance eline Ball Screw Assemblies P = 5 P = 10 50,000 100,000 Operational Performance (km) 5,000 10,000 500 1,000 50 100 Operational Performance Relubrication 0.05 0.1 0.2 0.3 0.4 F eq /C (Load /Dynamic Load) Example: An eline Ball Screw with 10 mm lead with 15% dynamic load results in an operational performance of approximately 1500 km. Relubricate every 500 km. Relubrication every 50 x 10 6 U. P = 10 every 500 km P = 5 every 250 km

8 Bosch Rexroth AG R310EN 3314 (2005.06) Technical Data Acceptance Conditions and Tolerance Grades Permissible travel deviation similar to DIN 69 051, Part 3 and ISO 3408-3 Symbol definitions (excerpt): l 0 = Nominal travel l 1 = Thread length l 0 = Travel deviation l u = Useful travel l e = Excess travel e p = Tolerance for actual mean travel deviation ν up = Permissible travel variation Ball screw with precision rolled screw SN-R l 1 l e l u + 300 300p l e l 0 e p ν 300p = ν 2pp = within useful travel l u Permissible travel deviation within 300 mm travel Permissible travel deviation within 1 revolution 0 Dl Subindices: p = Permissible a = Actual e p Maximum permissable path deviation e p Useful e p T9 e p T10 travel (µm) (µm) 0 0 0 100 87 140 250 217 350 500 433 700 750 650 1050 1000 867 1400 1250 1083 1750 1500 1300 2100 1750 1517 2450 2000 1733 2800 2250 1950 3150 2500 2167 3500 e p = 2 l u 300 ν 300P ν 300p = 210 µm Excess travel l e l e = 2 Recommended overrun for the design

R310EN 3314 (2005.06) Bosch Rexroth AG 9 Runouts and location deviations based on DIN 69 051, Part 3 and ISO 3408-3 Radial runout 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. l5 l5 l5 t 5p AA l 5 t 5p in µm for l 5 above up tolerance grade to 9 10 6 12 80 40 80 12 25 160 40 80 25 50 315 40 80 A 2 l 1 A 2 t 5p l5 l5 A A t 5 max l 1 / t 5max in µm for l 1 4l 5 above up to tolerance grade 9 10 40 80 160 40 60 120 240 60 80 200 400 80 100 320 640 Radial runout 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 t 6p AA A 2 A Nominal diameter Ref. length l t 6p in µm for l 6 l tolerance grade above up to 9 10 6 20 80 20 40 20 50 125 25 50 l 6 Coaxial deviation t 7 of the journal diameter of the ball screw shaft in relation to the bearing diameter for l 7 l. l 7a Where l 7 > l then t 7a t 7a l C t 7p C bearing seat Nominal diameter Ref. length l t 7p in µm for l 7 l tolerance grade above up to 9 10 6 20 80 6 12 20 50 125 6 12 l 7 Axial runout t 8 of the shaft (bearing) face of the ball screw shaft in relation to the bearing diameter. t 8p C d C F Nomnial diameter t 8p in µm tolerance grade above up to 9 10 6 63 6 12 bearing seat

10 Bosch Rexroth AG R310EN 3314 (2005.06) eline BSA with Screw-in Single Nut ZEV-E-S, fixed length Rexroth mounting dimensions Single fixed bearing With seals With backlash 0.1 mm Screw tolerance class T9 or T10 Ordering Code x P x D w - i 12 x 5R x 2-3 12 x 10R x 2-2 16 x 5R x 3-3 16 x 10R x 3-3 20 x 5R x 3-4 Tolerance Length Part Numbers class L Total L Screw T9 400 317 R2540 002 01 T10 400 317 R2540 000 01 T9 400 317 R2540 002 02 T10 400 317 R2540 000 02 T9 550 467 R2540 002 03 T10 550 467 R2540 000 03 T9 550 467 R2540 002 04 T10 550 467 R2540 000 04 T9 550 490 R2540 002 05 T10 550 490 R2540 000 05 = Nominal diameter P = Lead (R = right, L = left) D W = Ball diameter i = No. of turns

R310EN 3314 (2005.06) Bosch Rexroth AG 11 Undercut Form F DIN 509 Threat undercut DIN 76 short Undercut Form E DIN 509 D 8 Hole for hook wrench D 4 L 7 Lube hole Screw End Form 81 D 2 h7 G 1 D 1h6 L 2 LG 1 L 1 L 15 L ZF DR DF D 1 D w d2 d1 G1 L Nut L Screw L Total Screw End Form 83 friction-welded L ZF L R L F Nut Dimensions (mm) P D 1 D 4 D 8 G 1 L Nut L 7 L 15 h10 ±0.3 12 5 25.5 2.7 3.2 M20 x 1 36 8.5 10 12 10 25.5 2.7 3.2 M20 x 1 40 8.5 10 16 5 32.5 2.7 4.2 M26 x 1.5 40 10.5 12 16 10 32.5 2.7 4.2 M26 x 1.5 54 10.5 12 20 5 38 2.7 8 M35 x 1.5 50 12.5 14 Screw Form Dimensions (mm) P d 1 d 2 L ZF D R L R D F L F D 1 L 1 D 2 L 2 G 1 LG 1 12 5 83 11.4 9.9 60 15 15 9.5 8 12 17 10 25 M12x1 18 12 10 11.4 9.9 60 15 15 9.5 8 12 17 10 25 M12x1 18 16 5 15.0 12.9 60 15 15 12.5 8 12 17 10 25 M12x1 18 16 10 15.0 12.9 60 15 15 12.5 8 12 17 10 25 M12x1 18 20 5 81 19.0 16.9 60 - - - - 12 17 10 25 M12x1 18 Load Capacities max. Speed dyn. C stat. C 0 v max P (N) (N) (m/min) 12 5 2300 3500 30 12 10 1500 2200 60 16 5 5600 7100 25 16 10 5800 7400 50 20 5 8600 12900 20

12 Bosch Rexroth AG R310EN 3314 (2005.06) eline BSA with Single Nut with Flange FBZ-E-S, fixed length Rexroth mounting dimensions Single fixed bearing With seals With backlash 0.1 mm Screw tolerance class T9 or T10 Ordering Code x P x D w - i 20x5Rx3-4 25x5Rx 3-4 25x10Rx3-4 32x5Rx3,5-4 32x10Rx3,969-5 Tolerance Length Part Numbers class L Total L Screw T9 550 490 R2540 002 06 T10 550 490 R2540 000 06 T9 700 640 R2540 002 07 T10 700 640 R2540 000 07 T9 700 640 R2540 002 08 T10 700 640 R2540 000 08 T9 1200 1120 R2540 002 09 T10 1200 1120 R2540 000 09 T9 1200 1120 R2540 002 10 T10 1200 1120 R2540 000 10 = Nominal diameter P = Lead (R = right, L = left) D W = Ball diameter i = No. of turns

R310EN 3314 (2005.06) Bosch Rexroth AG 13 Screw End Form 81 Undercut Form F DIN 509 Plastic recirculation cap Thread undercut DIN 76 short Undercut Form E DIN 509 Lube hole L 10 D 7 S D 6 j D 2 h7 G 1 D 1h6 D 1 D1 L 5 L 3 L 4 D w d2 d1 +0,7 D 1 0,1 0,05 D 5 L 2 LG 1 L 1 6x60 L Nut Plastic recirculation cap L ZF L Screw L Total Nut Dimensions (mm) P D 1 D 5 D 6 D 7 L Nut L 3 L 4 L 5 L 10 S ϕ ±0.5 ( ) 20 5 33 58 45 6.6 40 10 6 15 15 M6 30 25 5 38 63 50 6.6 43 10 6 16.5 16.5 M6 30 25 10 38 63 50 6.6 62 10 16 16 36 M6 30 32 5 48 73 60 6.6 46 12 6 17 17 M6 30 32 10 48 73 60 6.6 77 12 16 20 45 M6 30 Screw Form Dimensions (mm) P d 1 d 2 L ZF D 1 L 1 D 2 L 2 G 1 LG 1 20 5 81 19.0 16.9 60 12 17 10 25 M12x1 18 25 5 24.0 21.9 60 15 19 12 25 M15x1 16 25 10 24.0 21.9 60 15 19 12 25 M15x1 16 32 5 31.0 28.4 80 20 25 18 40 M20x1 15 32 10 31.0 27.9 80 20 25 18 40 M20x1 15 Load Capacities max. Speed dyn. C stat. C 0 v max P (N) (N) (m/min) 20 5 8600 12900 20 25 5 9500 16300 16 25 10 9400 16200 32 32 5 13000 24000 13 32 10 19000 35000 25

14 Bosch Rexroth AG R310EN 3314 (2005.06) eline BSA with Screw-in Single Nut ZEV-E-S, customer-specified length Single fixed bearing With seals With backlash 0.1 Screw tolerance class T9 or T10 L Gew = L Ges L ZF L ZL Note: Observe overrun (2 ) Ordering Code = Nominal diameter P = Lead (R = right, L = left) D W = Ball diameter i = No. of turns x P x D w - i 12 x 5R x 2-3 12 x 10R x 2-2 16 x 5R x 3-3 16 x 10R x 3-3 20 x 5R x 3-4 Tolerance Length Part Numbers class L Total max L Screw max T9 1250 1182 R2540 002 11 T10 1250 1182 R2540 002 21 T9 1250 1182 R2540 002 12 T10 1250 1182 R2540 002 22 T9 1700 1628 R2540 002 13 T10 1700 1628 R2540 002 23 T9 1700 1628 R2540 002 14 T10 1700 1628 R2540 002 24 T9 2500 2427 R2540 002 15 T10 2500 2427 R2540 002 25 When ordering, please ensure that part numbers and and desired total length L Total are given. (R2540 xx2 xx, xxxx mm). L Total

R310EN 3314 (2005.06) Bosch Rexroth AG 15 Undercut Form F DIN 509 Threat undercut DIN 76 short Undercut Form E DIN 509 Screw End Form 81 D 8 Hole for hook wrench D 4 Lube hole L 7 L 6 Undercut Form E DIN 509 Snap ring groove per DIN 471 H13 LS 1 G 1 L 2 LG 1 L 1 L 15 L ZF D w d2 d1 DR DF D 2 h7 D 1h6 D 1 G1 D 3 j6 S 1ST1 L Nut L Screw L ZL L Total Screw End Form 83 friction-welded L ZF L R L F Nut Dimensions (mm) P D 1 D 4 D 8 G 1 L Nut L 7 L 15 h10 ±0.3 12 5 25.5 2.7 3.2 M20 x 1 36 8.5 10 12 10 25.5 2.7 3.2 M20 x 1 40 8.5 10 16 5 32.5 2.7 4.2 M26 x 1.5 40 10.5 12 16 10 32.5 2.7 4.2 M26 x 1.5 54 10.5 12 20 5 38 2.7 8 M35 x 1.5 50 12.5 14 Screw Form Dimensions (mm) P d 1 d 2 L ZF D R L R D F L F D 1 L 1 D 2 L 2 G 1 LG 1 D 3 L ZL L 6 S 1 ST1 LS 1 12 5 83 11.4 9.9 60 15 15 9.5 8 12 17 10 25 M12x1 18 6 8 6 5.7 h10 0.8 12 10 11.4 9.9 60 15 15 9.5 8 12 17 10 25 M12x1 18 6 8 6 5.7 h10 0.8 16 5 15.0 12.9 60 15 15 12.5 8 12 17 10 25 M12x1 18 10 12 9 9.6 h10 1.1 16 10 15.0 12.9 60 15 15 12.5 8 12 17 10 25 M12x1 18 10 12 9 9.6 h10 1.1 20 5 81 19.0 16.9 60 - - - - 12 17 10 25 M12x1 18 12 13 10 11.5 h11 1.1 Load Capacities max. Speed dyn. C stat. C 0 v max P (N) (N) (m/min) 12 5 2300 3500 30 12 10 1500 2200 60 16 5 5600 7100 25 16 10 5800 7400 50 20 5 8600 12900 20

16 Bosch Rexroth AG R310EN 3314 (2005.06) eline BSA with Single Nut with Flange FBZ-E-S, customer-specified length Single fixed bearing With seals With backlash 0.1 Screw tolerance class T9 or T10 L Gew = L Ges L ZF L ZL Note: Observe overrun (2 ) Ordering Code = Nominal diameter P = Lead (R = right, L = left) D W = Ball diameter i = No. of turns x P x D w - i 20 x 5R x 3-4 25 x 5R x 3-4 25 x 10R x 3-4 32 x 5R x 3,5-4 32 x 10R x 3,969-5 Tolerance Length Part Numbers class L Total max L Screw max T9 2500 2427 R2540 002 16 T10 2500 2427 R2540 002 26 T9 5000 4925 R2540 002 17 T10 5000 4925 R2540 002 27 T9 5000 4925 R2540 002 18 T10 5000 4925 R2540 002 28 T9 5000 4902 R2540 002 19 T10 5000 4902 R2540 002 29 T9 5000 4902 R2540 002 20 T10 5000 4902 R2540 002 30 When ordering, please ensure that part numbers and and desired total length L Total are given. (R2540 xx2 xx, xxxx mm). L Total

R310EN 3314 (2005.06) Bosch Rexroth AG 17 Screw End Form 81 Undercut Form F DIN 509 Threat undercut DIN 76 short Undercut Form E DIN 509 Lube hole Plastic recirculation cap L 10 L 6 Undercut From E DIN 509 LS 1 H13 Snap ring groove per DIN 471 D 7 S D 2 h7 G 1 D 1h6 D 1 D1 L 5 L 3 L 4 D w d2 d1 D 5 +0,7 D 3 j6 S 1ST1 D 1 0,1 0,05 D 6 j 6x60 L 2 LG 1 L 1 L Nut Plastic recirculation cap L ZF L Screw L ZL L Total Nut Dimensions (mm) P D 1 D 5 D 6 D 7 L Nut L 3 L 4 L 5 L 10 S ϕ ±0.5 ( ) 20 5 33 58 45 6.6 40 10 6 15 15 M6 30 25 5 38 63 50 6.6 43 10 6 16.5 16.5 M6 30 25 10 38 63 50 6.6 62 10 16 16 36 M6 30 32 5 48 73 60 6.6 46 12 6 17 17 M6 30 32 10 48 73 60 6.6 77 12 16 20 45 M6 30 Screw Form Dimensions (mm) P d 1 d 2 L ZF D 1 L 1 D 2 L 2 G 1 LG 1 D 3 L ZL L 6 S 1 ST1 LS 1 20 5 81 19.0 16.9 60 12 17 10 25 M12x1 18 12 13 10 11.5 h11 1.1 25 5 24.0 21.9 60 15 19 12 25 M15x1 16 17 15 12 16.2 h11 1.1 25 10 24.0 21.9 60 15 19 12 25 M15x1 16 17 15 12 16.2 h11 1.1 32 5 31.0 28.4 80 20 25 18 40 M20x1 15 20 18 14 19.0 h11 1.3 32 10 31.0 27.9 80 20 25 18 40 M20x1 15 20 18 14 19.0 h11 1.3 Load Capacities max. Speed dyn. C stat. C 0 v max P (N) (N) (m/min) 20 5 8600 12900 20 25 5 9500 16300 16 25 10 9400 16200 32 32 5 13000 24000 13 32 10 19000 35000 25

18 Bosch Rexroth AG R310EN 3314 (2005.06) Angular-contact thrust bearing with nut, LAL series Works both sides, screw-on type, for cost-effective assembly The bearing consists of: Angular-contact thrust bearing LGL Locknut NMG series Ordering Code Part Numbers x P 12 x 5/10 R1590 412 00 16 x 5/10 R1590 412 00 20 x 5 R1590 412 00 25 x 5/10 R1590 415 00 32 x 10 R1590 420 00

R310EN 3314 (2005.06) Bosch Rexroth AG 19 n D d m A 2 B H d 2 Ø0,2 A 1 Dimensions (mm) Weight P d D A 1 A 2 n m H B d 2 (kg) 12 5/10 12 35.45 44 50 32 38 22 20 6.6 0.12 16 5/10 12 35.45 44 50 32 38 22 20 6.6 0.12 20 5 12 35.45 44 50 32 38 22 20 6.6 0.12 25 5/10 15 38.45 47 51 35 39 24 22 6.6 0.14 32 10 20 50.45 60 60 47 47 30 28 6.6 0.30 Load Capacities dyn. C stat. C 0 P (N) (N) 12 5/10 13200 17900 16 5/10 13200 17900 20 5 13200 17900 25 5/10 16400 22400 32 10 27500 40000

20 Bosch Rexroth AG R310EN 3314 (2005.06) Grooved Ball Bearing with safety ring, LAD series The bearing consists of: Grooved ball bearing DIN 625....2RS Safety Ring DIN 471 (2 Pieces) Ordering Code Part Numbers x P 12 x 5/10 R1590 606 00 16 x 5/10 R1590 610 00 20 x 5 R1590 612 00 25 x 5/10 R1590 617 00 32 x 5/10 R1590 620 00 B D d Dimensions (mm) Load Capacities (axial) Complete Weight x P d D B dyn. C stat. C 0 (N) (N) (kg) 12 x 5/10 6 19 5 2450 900 0.005 16 x 5/10 10 30 9 6000 2240 0.030 20 x 5 12 32 10 6950 2650 0.035 25 x 5/10 17 40 12 9500 4150 0.064 32 x 5/10 20 47 14 12700 5700 0.106 Compatible for eline Ball Screw Assemblies with fixed bearings

R310EN 3314 (2005.06) Bosch Rexroth AG 21 Lubrication Relubrication for NLGI 2 grease The nut has to be lubricated with lubricant via the lube port before the ball screw is started. The relubrication is valid for Ball Screw Assemblies with seals. Relubrication quantity of grease (g) Single nut, precision-rolled screw R x P x D w -i FBZ-E-S ZEV-E-S 12 x 5R x 2-3 0.3 12 x 10R x 2-2 0.3 16 x 5R x 3-3 0.85 16 x 10R x 3-3 1.0 20 x 5R x 3-4 0.7 1.2 25 x 5R x 3-4 1.1 25 x 10R x 3-4 1.3 32 x 5R x 3.5-4 1.6 32 x 10R x 3.969-5 2.3 For lubrication, we recommend Rexroth Dynalub 510, a lithium-based highperformance grease specially developed for linear motion systems. It is notable for offering excellent water resistance and protection against corrosion. Part Numbers Description Consistency class Temperature range Packaging unit Rexroth DIN51825 DIN51818 ( C) R3416 037 00 Dynalub 510 KP2K 2 20 to +80 1 x 400g Tapered grease nipple The Ball Screw Assemblies nut is to be lubricated via the lubrication port with grease before operation start-up. 8 M6 Part Number R3417 008 02

22 Bosch Rexroth AG R310EN 3314 (2005.06) Mounting Condition as delivered Rexroth Ball Screw Assemblies are normally lubricated with NLGl 2 grease when specified. This initial lubrication allows for relubrication using either oil or grease. If you use a different type of lubrication, please ensure that the other lubricant can be mixed. In special cases, you can specify a corrosion-preserved Ball Screw Assembly. Important: The selected lubricant must be in the nut before the machine is started. Cleaning: Various cleaning agents can be used to degrease and wash the assembly: Aqueous cleaning agents Organic cleaning agents Immediately after cleaning, thoroughly dry all parts, then apply a preservative coating or anti-corrosion oil. In all cases, take care to observe the appropriate legal regulations (environmental protection, health and safety at work, etc.) as well as the specifications for the cleaning agent (e.g. handling). Storage Ball screw assemblies are high-quality systems that must be treated with due care. In order to prevent damage and contamination, the elements should not be removed from the protective wrapping until immediately before installation. Once they have been removed from the packaging, they must be set down on V-shaped cradles. Nut mounting Single nut with standard backlash Single nut with reduced backlash The nut unit may only be mounted using a mounting arbor. The outer diameter of the arbor should be approx. 0.1 mm smaller than the root diameter of the screw. In most cases, the transport arobor on which the nuts are delivered may be used to mount the nut. The end of the screw thread must be chamfered in order to prevent damage to the seal and the internal components of the nut unit. The various mounting steps are described below. Proceed in reverse order when removing the nut from the screw. Take particular care not to damage the nut, screw or internal components, as this could result in the premature failure of the ball screw assembly. Mounting arbor Dimensions (mm) x P L D i D a 12 x 5/10 55 8 9.85 16 x 5/10 70 11 12.7 20 x 5 70 15 16.5 25 x 5/10 90 20 21.7 32 x 5/10 100 26 28 D i D a L

R310EN 3314 (2005.06) Bosch Rexroth AG 23 Mounting steps The nut is to be mounted as follows: Remove the rubber ring from one end of the mounting arbor. Push the mounting arbor with nut until it engages with the end of the thread. The arbor must make contact with axial clearance. Carefully turn the nut unit onto the thread, applying only light axial pressure. Installation in the Machine It is not normally necessary to remove the preservative coating before installation. If the ball screw is contaminated it must first be cleaned (see Cleaning ) and reoiled Push the nut unit into the mounting bore, taking care to avoid any impacts or misalignment. Tighten the mounting screws using a torque wrench if necessary. Maximum tightening torque for the steel/steel material pairing (R m 370 N/mm 2 ), see table. Steel/steel material pairing Screwdiamater Tightening torque (Nm) strength class to DIN ISO 898: (mm) 8.8 10.9 12.9 M3 1.3 1.8 2.1 M4 2.7 3.8 4.6 M6 9.5 13 16 M8 23 32 39 M10 46 64 77 M12 80 110 135 M16 195 275 330 Remove the arbor only when the nut unit is fully located on the screw thread. For the steel/aluminium and aluminium/aluminium material pairings (R m 280 N/mm 2 ), the maximum tightening torques specified in the follow table apply. When screwing into aluminium, the length of thread engagement should be at least 1.5 times the screw diameter. Steel/aluminium and aluminium/ aluminium material pairing Screw diamater Tightening torque (Nm) strength class to DIN ISO 898: (mm) 8.8 10.9 12.9 M3 1.2 1.2 1.2 M4 2.4 2.4 2.4 M6 8.5 8.5 8.5 M8 20 20 20 M10 41 41 41 M12 70 70 70 M16 175 175 175

Bosch Rexroth AG Linear Motion and Assembly Technologies Ernst-Sachs-Straße 100 D-97424 Schweinfurt, Deutschland Telephon +49 (0)97 21 9 37-0 Telefax +49 (0)97 21 9 37-2 75 (general) Telefax +49 (0)97 21 9 37-3 50 (direct) www.boschrexroth.com/brl e-mail: info.brl@boschrexroth.de Subject to technical modifications Bosch Rexroth AG 2005 Printed in Germany - p 2005/06/5/H R310EN 3314 (2005.06)