Standard_Parts_Catalogue

| Thread Locking Page 2175 Features MVK Thread Locking Gluing Micro Encapsulation Precote 80 (Red) d l 1 l 2 ≈ M IN in Nm Max. insertion torque M LB in Nm Min. breakaway torque M OUT in Nm Max. loosening torque M  5 1,5 … 2,5  7,5  0,5  1   6,5 M  6 2 … 3  9  0,8  1,8  10 M  8 2,5 … 4 12  1,5  4  26 M 10 3 … 4,5 15  3 10  55 M 12 3,5 … 5 18  5 16  95 M 16 4 … 6 24 11 35 250 M 20 5 … 7,5 30 14 45 500 The principle of micro encapsulation MVK (gluing) consists of a liquid plastic material and hardener encapsulated in a thin polymer film which is embedded in a lacquer like car- rier deposited in patch form an a thread. This patch dries and the component can be stored and handled in a normal manner. When fitting a bolt with this patch the two capsules will burst under the pressure and friction between the two th- reads. The liquid plastic material and hardener will mix lea- ding to a chemical reaction which will harden the glue, thus giving the required thread locking. The setting of the mixture will start after 10-15 minutes. Sufficient hardness is achieved after about 30 minutes but complete setting is reached after 24 hours. Adjustment and setting process must be completed within about 5 minutes. The thread locking can be cracked by applying the M OUT torque on the thread or alternatively by heating the com- ponent over +170 °C. It is not recommended to re-use the thread. Description - Thread locking to the highest order to prevent the self loosening and component loss even under vibration. Not suitable for adjustable bolts or screws. - This security aspect may be essential for certain applica- tions of standard parts. Stockholding of liquid glue is eli- minated. - Low insertion torque - Temperature resistant from – 40 °C up to 170 °C - Excellent chemical stability Threads, free from oil and grease give increased strength of locking action. Components treated with this process can be stored for up to 4 years. The torque value comply with DIN 267 Part 27. They are based on a test of a thread without preload with a nut thread of 6H at room temperature. For thread lengths l 0 < l 2 , l 2 is reduced in such a way that one to two thread turns are not coated at the end of the thread.