17 Block Form: 64 = SKN= Short 94 = SNN= Normal R 1 6 9 4 2 1 3 10 Accuracy Grade: 4 = N Grade 3 = H Grade (Stock) Preload Option: 9 = C0 Clearance 1 = C1 Light Preload Standard Ball Type Linear Guides Nominal size: 8 = 20 2 = 25 Seal Option: 10 = Standard 11 = Low Friction Model Block kg Rail kg/m Capacity kN Moment Ratings kNm Preload Options vs Ordering Code DYN STAT MR MP & MY C0 - Clearance C1 - Light DYN STAT DYN STAT Force N Order Code Force N Order Code SKN 20 0.20 2.4 9.6 13.6 0.12 0.17 0.04 0.06 0 R1664 893 10 190 R1664 813 10 SNN 20 0.30 14.5 24.4 0.19 0.31 0.10 0.17 R1694 893 10 290 R1694 813 10 SKN 25 0.30 3.2 19.8 21.2 0.28 0.30 0.13 0.14 0 R1664 293 10 320 R1664 213 10 SNN 25 0.45 28.6 35.9 0.41 0.51 0.29 0.36 R1694 293 10 460 R1694 213 10 Size v max a max * 20 – 25 3 m/s 250 m/s² LINEAR BALL GUIDES ARE STOCKED IN H GRADE WITH STANDARD SEALS ONLY OTHER ACCURACY GRADES AND SEAL OPTIONS ARE AVAILABLE ON REQUEST FAX: 01827 253390 www.apex-trans.co.uk TEL: 01827 253340 sales@apex-trans.co.uk * a max = 50 m/s² if combined * load > 2.8 x preload force Standard Ball Guides – Specifications Square – Low Profile