Our rack jacks feature specially made round type racks. They have increased section diameter and tooth width over standard round racks as well as squared-off tooth profiles to prevent rotation within the jack body. The racks are also made from high tensile ETG®100 alloy steel to increase the capacity of the jacks. Rack jacks require protection against side and transverse loads as they can only transfer tensile and compressive forces. This support is usually achieved via the use of linear guides or ball bushes running parallel with the rack travel. Please contact our sales team for information on the options available from stock. BOTH ENDS OF EACH RACK ARE MACHINED TO ALLOW FOR CONTINUOUS MOUNTING WE RECOMMEND THE USE OF A MOUNTING PIECE AND GREASE OR OIL LUBRICATION Worms and Worm Wheels worm 7 .0 FAX: 01827 253390 www.apex-trans.co.uk TEL: 01827 253340 sales@apex-trans.co.uk MOD Suits Rack Jack Size Pitch (mm) Length (mm)** Tooth Number Ø D h6 H HA (PCD) B M T Mass (kg) Order Code 1.0 R1 3.1416 2900 923 25 22.5 21.5 15.0 M10 30 10.2 141-210-529 2.5 R2 7.8540 2900 369 32 29.0 26.5 18.6 M12 35 16.0 141-325-229 2.5 R3 7.8540 2900 369 60 52.0 49.5 40.8 M20 50 55.4 141-625-029 * ETG®100 high quality alloy steel has 960-1100 N/mm² tensile strength ** Maximum available rack length / number of teeth (Shorter lengths available upon request) Helix Angle Pressure Angle Tooth Quality Tooth Finish Material Hardness STRAIGHT 0° 20° Q8 h27 Milled ETG®100 * Soft 36 T MM L B HA H D 1 2 3 4 3 2 1 5 4 6 7 8 541-300-369 WEIGHT: SHEET 1 OF 1 SCALE:1:5 DWG NO. TITLE: REVISION DO NOT SCALE DRAWING MATERIAL: DATE SIGNATURE NAME DEBUR AND BREAK SHARP EDGES FINISH: UNLESS OTHERWISE SPECIFIED: DIMENSIONS ARE IN MILLIMETERS SURFACE FINISH: TOLERANCES: LINEAR: ANGULAR: Q.A MFG APPV'D CHK'D DRAWN With Straight Teeth Rack Jack Round Racks D E F C B A