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1 D60 T-Bolts are manufactured out of chrome-moybdenum steel, refined to a quality of This assures high tensile strength and a maximum absoption of vibrations during clamping, resulting in a longer tool life. The T-foot is precision made to protect the machine table slots. The precision thread ISO 6g eliminates problems in assembling the nut and assures a long life of the bolt. D d l a l1 a1 e k D d l a l1 a1 e k a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a Gerfa Tools BV

2 D65 Studs are made of chrome-molydenum steel, refined to 12.9 and able to withstand high tension forces and assuring maximum absorption of vibrations and safe clamping. These studs can be used to lengthen bolts D60 or as T-bolts in com-bination with T- nuts D64, Thread precision ISO 6g D d l l1 12 D d l l1 12 D d l l1 l D65 Gerfa Tools BV 5

3 D64 T-Nuts made of alloyed steel with high tensile strength are not hardened for reasons of security. Excellent finishing prevents damage of the slot in the machine table. Thread quality ISO 6H. D d a h a1 e k D d a h a1 e k a a a a a a a a a a D64 6 Gerfa Tools BV

4 D d s h D61 D61 - D62 -D81 - D82 nuts are made of high quality carburised steel. By special manufacturing methods the external surfaces are hardeneden, weheras the thread (ISO 6H) is unhardened. D d s h D81 D d s h D62 D d s h D82 D M d h D63 D63 and D93 Washers of carburised steel are surface hardened. the equal roundings of nuts and washers assure a vertical position of T-bolts in all cases. D M d h D93 Gerfa Tools BV 7

5 DIF-Clamps are manufactured of manganese-vanadium alloyed tool steel. A special heat treatment makes them very resistant to deformation and wear. Clamping is based on elasticity so that DIF clamps remain undeformed during use and their life time is unlimited; this makes them the cheapest clamps that exists. D66 Clampes are designed for clamping situations where the T-bolt can be situated near the workpiece. The ground clamping faces are located on the ends by releaving the center part of the bottom. D M l d l1 l2 b b1 h h D66 D67 Clamps are longer than D66 and may be used at both ends. the whole bottom-face is ground and the ends are narrowed to realise exact location of the clamping points. D M l d l2 b b1 h h D67 8 Gerfa Tools BV

6 D68 U-clamps are suitable for longer distances from bolt to clamping point and/or for bigger clamping forces. Without risk of deformation. The whole bottem face is ground. D M l d b h h D D69 Clamps specially designed for clamping moulds and dies. The division of forces is favoured by the relieved and rounded clamping finger and by the short suspending face at the opposite end. D M l d l1 l2 l3 b b1 h h1 s D69 D71 Clamps suitable for clamping in holes, grooves and cavities of the workpiece. D M l d l1 l2 b h d D71 Gerfa Tools BV 9

7 Supporting is more than setting the right height. It als means the absoption of clamping forces and vibrations caused and leading them to the machine table. DIF supporting tools are outstanding by their solid design, their accuracy, their wide scale of applications and their long life. Depending upon the application, choice can be made from step- or toothblocks or cotinuously adjustable jacks, of which some can be mounted on the machine table. 10 Gerfa Tools BV

8 D70 Toothblocks are made of alloyed tool steel, provided with an exclusive DIF tooth profile under 45º and hardened. The blocks are used by two equal or different pieces, because tooth profile and width of all blocks are equal. Vertical displacement is 2.8 per tooth. Inversion of one block gives a displacement of 1.4. D70.15 Stepblock are used single for clamping heights form 5 upto 17.5 ins steps of 2.5. D70.00 is an assortment set of toothblocks and stepblocks in a solid, closable wooden case. D H min H max B D ,5 40 4x x x x x x D70 Gerfa Tools BV 11

9 D74 adjustable packing blockes are manufactured from highly carborised steel. The outer surface is hardened. They consist of 5 pilable parts, the upper one being an adjustable jack. The height of the whole combination is 40 to 200. The spindle thread is nonhardened. Can only be ordered as a complete set, D H min H max D D D74 12 Gerfa Tools BV

10 D Jacks can support workpieces weighing serveral tons with full stability and safety. The pivot has a trapezoidal thread T30x6. The adjustble height can be secured. Turning out the pivot too far is prevented. The knurled head has a bore to accomodate the inserts D.01, D.02 and D.03. All jacks can be attached on a baseplate D.04, which can be fixed on the machine table by means of a bolt M12, M16 or M20. D H min H max F max (t) Gerfa Tools BV 13

11 The jack D79 for heavy loads can be fastened on the machine table (see drawing). The self-adjusting head is carbonized and hardenened. In the fixed position heights of 3 meter of more are available for safe clamping. The jack D79.60 can be used on more machines with different slots by changing the disk with thread (M16-M30). All disks with thread and blocks have to be ordered seperately. D H F max (t) min. 135 D max pos 1: D79.60 pos 2: D79.16 d = M16 D79.20 d = M20 D79.24 d = M24 D79.30 d = M30 pos 3: D pos 4: D pos 5: D D79 D80 Jacks for horizontal positioning of heavy workpieces. D H F max (t) 80 min. 115 max D Gerfa Tools BV

12 D77 Adjustable Stop for accurate positioning of identical, succeeding pieces. Continuously adjustable horizontally and vertically. Adapting to DIF bolts, nuts and washers: D77.40 to M10 and M12; D77.50 to M16 and M20. D H min H max l min l max d M10-M M10-M12 D77 D78 Set of lateral clamps for clamping pieces of which the top face should be entirely free. The set consists of a fixed part and a clamping part. During clamping the piece is pressed down on the machine table. D M a a a a a a a a28 H-min H max b l pos 1 pos M12 x a M12 x a M16 x a M16 x a M20 x a M20 x 90 M24 x a a28 D78 Gerfa Tools BV 15