AZ MOTOR - Swegon

1 AZ MOTOR INSTRUCTIONS FOR BEARINGS REPLACEMENT Edition 4 (June 2014) AZ MOTOR Edition 4 Instructions for bearings replacement 2 1. ABOUT INSTRUCTIONS FOR BEARINGS REPLACEMENT In this document there are presented steps for safe bearings replacement in AZ motors. Every step is described with text and pictures so that any kind of misunderstanding is minimized to a low level. Before any kind of MOTOR disassembly you should read the instructions for bearings replacement first. During the bearings replacement you will need some standard and specially adjusted tools.

2 The list of tools is described in chapter Some parts of the MOTOR must not be used again. The list of new MOTOR parts is described in chapter All pictures in this document are symbolic. Domel is not responsible for any kind of equipment damage, MOTOR or EC controller failure or any kind of personal injuries or material damage that were caused because of not following the instructions for bearings replacement. Explanation of safety signs and safety messages Bellow there is presented the explanation of safety signs which are used in these instructions.

3 For your safety and safety of your equipment you should always follow safety signs. DANGER indicates a hazardous situation with a high level of risk. WARNING indicates a hazardous situation with a medium level of risk. CAUTION indicates a hazardous situation with a low level of risk. NOTE. Notes, additional information and instruction tips. AZ MOTOR Edition 4 Instructions for bearings replacement 3 List of tools and accessories for bearings replacement In table 1 there are presented tools that you should use for safe bearings replacement.

4 Table 1. List of tools for bearings replacement Tool marking Name of tool Picture of tool (a) TORX T20 screwdriver or tool (b) TORX T30 screwdriver or tool (c) retaining ring pliers (d) Heavy duty pliers (e) INBUS (hexagonal) tool 5 mm for M6 screw (f) three M6 eye bolts (AZ 84) OR two M8 eye bolts (AZ 108 and AZ 150) OR two eye bolts with thread M14x1,5 (AZ 220) or or (g) small flat screwdriver AZ MOTOR Edition 4 Instructions for bearings replacement 4 (h) pliers (i) 2 or 3 handed puller We recommend to use the puller from KUKKO manufacturer ( ) with small pulling arms.

5 (j) inductive heater (k) special tools for front bearing installation We recommend using bearing fitting tool kit TMFT 36 from SKF manufacturer ( ). (l) centring tube (picture 1) (m) torque wrench AZ MOTOR Edition 4 Instructions for bearings replacement 5 (n) assembly grease (o) adjusted press ring (picture 2) (p) sharp knife (r) rubber hammer (s) tool for fan wheel installation (t) Wrench 19 mm Dimensions for centring tube are described on picture 1 and in table 2. Dimensions for adjusted press ring are described on picture 2 and table 3.

6 AZ MOTOR Edition 4 Instructions for bearings replacement 6 Picture 1. Tube (tube provide concentric between rotor (shaft) and the stator support) Table 2. Centring tube dimensions No. MOTOR type A[mm] B[mm] C[mm] x/y [mm/ ] y [ ] 1 AZ 108 26,65 24,65 100 45 2 AZ 150 34,75 29,75 150 1 60 3 AZ 220 54,7 34,7 150 4 60 Dimension C can be longer if needed. AZ MOTOR Edition 4 Instructions for bearings replacement 7 Picture 2. Adjusted press ring dimensions Table 3. Adjusted press ring dimensions No.

7 MOTOR type d[mm] D[mm] E[mm] 1 AZ 84 6,5 16 34,5 2 AZ 108 4,5 18 3 AZ 150 6,5 4 AZ 220 6,5 AZ MOTOR Edition 4 Instructions for bearings replacement 8 List of new MOTOR parts In table 4 there is presented list of new MOTOR parts. Which bearing type must be used according to MOTOR size is described in table 5. Table 4. List of new MOTOR parts 2 pieces of new bearing according to table 5. 1 piece of new wave spring washer according to table 5 Grounding brush support with brushes Dimensions: 54x15x11,3 for motors ( MOTOR size AZ 150) 64x15x11,6 for motors ( MOTOR size AZ 220) New larger press ring For motors ( MOTOR size AZ 150) For motors ( MOTOR size AZ 220) Table 5.

8 bearing types and wave spring washer according to MOTOR sizes MOTOR Code MOTOR size Bearings type Size of wave spring washer (d1 x d2 x s x h) Shaft end Not shaft end C3E D EA3S NSK C3E D EA3S NSK AZ 84-50 6202 ZZ 6202 ZZ 28x34,5x0,6x3 AZ 108-30 6204 DDU 6203 DDU 33x39,1x0,5x2,9 AZ 108-30 6204 DDU 6203 DDU 33x39,1x0,5x2,9 AZ MOTOR Edition 4 Instructions for bearings replacement 9 AZ 108-55 6204 DDU 6203 DDU 33x39,1x0,5x2,9 AZ 108-55 6204 DDU 6203 DDU 33x39,1x0,5x2,9 AZ 150-45 6205 ZZ 6205 ZZ 42x51x0,5x3,4 AZ 150-70 6205 ZZ 6205 ZZ 42x51x0,5x3,4 AZ 150-70 6205 ZZ 6205 ZZ 42x51x0,5x3.

9 4 AZ 220-55 6206 ZZ 6206 ZZ 51x61x0,5x3,7 AZ 220-55 6206 ZZ 6206 ZZ 51x61x0,5x3,7 AZ 220-100 6206 ZZ 6206 ZZ 51x61x0,5x3,7 AZ 220-100 6206 ZZ 6206 ZZ 51x61x0,5x3,7 AZ 220-100 6206 ZZ 6206 ZZ 51x61x0,5x3,7 AZ 220-55-100 6206 ZZ 6206 ZZ 51x61x0,5x3,7 Sufficient bearings life time is guaranteed just with bearings specified in table 5. These bearings are filled with special grease that ensures appropriate life time. Using other bearing types can lead to shorter MOTOR life time and Domel cannot guarantee for these bearings.

10 Explanation of bearing designation: 6205 ZZ C3 E D EA3 S NSK bearing producer Grease quantity S - standard (35% of free bearing space) Type of special grease Production location Noise level mark E quiet bearing Radial internal clearance C3 - 6202, 6203 (11-25 m) 6204, 6205, 6206 (13-28 m) bearing sealing ZZ shields on both sides DDU contact rubber seals on both sides bearing geometry number Other data important for new bearing selection.