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7           Timing Pulleys S3M                                                                                                                                                                         7

            Timing Pulleys & Idlers & Belts /   Round Belt Pulleys & Idlers & Belts  S3M  Type  Pulley M Material Flange  S Surface Treatment                                                                     Round Belt Pulleys & Idlers & Belts  Timing Pulleys & Idlers & Belts /



                                            3mm


                                                    E-HTPB
                                                                                       Black Anodized
            Timing   Pulleys                        E-HTPA        Aluminum Alloy       Clear Anodized                                                                                                             Pulleys  Timing
                                                    E-HTPK
                                                                                       Hard Anodized*
                                                    E-HTPM                             Black Oxide Film
          P.07-007                                             General Structural Steel                                                                                                                          P.07-007
                                                    E-HTPP        or Carbon Steel   Electroless Nickel Plating
             Idlers                                 E-HTPS        Stainless Steel           -                                                                                                                      Idlers
                                                   *Film hardness for hard anodized treatment is 300 HV min.
          P.07-033  QPulley Shape                                                Type & Nominal Width (* dimension)                                                                                              P.07-033
             Timing Belts  4  A Shape  4  B Shape  2-M  4  K Shape  Standard Tooth Profile  S3M060  A B K  7  11  19 -                                                                                             Timing Belts
                                                                                                   W
                                                                                                A
                                                                                        Pulley Shape
                                                                                                     L
                                                                                  Belt Type
                                                                              0.381
                       *W
                                     *L
                                                                       1.95
                                    *W
                       *A
                         2.0
                    2.0
                                                                      0.254
          P.07-055    W/2 2-M    2.0  *A  2.0 4.5   2.0  *A *L  5  2-M  R0.28  R1.975 R0.15  1.11  S3M100  A B K  11  15  23 -                                                                                   P.07-055
            Round Belt Pulleys &   Idlers & Belts  P.D.  O.D.  dH7  (t1.0)  E  F  P.D.  O.D.  dH7  (t1.0)  D  E  F  F  P.D.  O.D.  E  dH7  (t1.0)  E  D  Tooth groove dimensions    S3M150  A B K  17  21  29 -   Idlers & Belts  Round Belt Pulleys &
                                                                 slightly vary according to
                                                                  the number of teeth.
                                                                   (Pitch: 3.0mm)
          P.07-088                                                               Threaded Hole Size Table                                                                                                        P.07-088
                                                                                 (Shaft Bore Specs:  P  ·  N )
                 QShaft Bore Specs.                                              dH7 Shaft Bore ID  M (Coarse Thread)
                 5  H  Round Hole  5  P  Round Hole + Tap  5  N  New JIS Keyway + Tap  4~5      M3
                                                                                     6~17
                                                                     QKeyway Size   18~33       M4
                                                                                                M5
                                                                       bjs9  t      34~42       M6
                                                                                 E For more tap dimensions, refer to the
                                          (120°)
                                                                           2-R0.2   MISUMI website.
                                                                           or Less
                                                                                 N/NK: New JIS (B1301) keyway size table
                                                                                   Shaft Bore  Keyway
                    HH7           PH7                  N H7            dH7       Spec. Shaft Bore Tolerance b  js9  t  Tolerance
                 E  No tapped holes or set   E  For Shape A pulley, the set       N  8  + 0.015  3 ±0.0125 1.4
                  screws.        screw hole is set around 120°                    N  10  0
                                 to avoid interference with the                  NK  10  + 0.015  4 ±0.0150 1.8
                                 tooth top.                                             0
                                                                                  N 11~12   4     1.8  + 0.1
                                                                                                     0
                                                                                  N 13~17  + 0.018  5  ±0.0150 2.3
                                                                                        0
                                                                                  N  18     6     2.8
                                                                                  N 19~22  + 0.021  6 ±0.0150 2.8
                                                                                        0
                                                                                 E  For more keyway dimensions, refer to the
                                                                                  MISUMI website.
                           Part Number       4Pulley  5Shaft Bore Specs. H   5Shaft Bore Specs. P   5Shaft Bore Specs. N/NK
                      1Type   2Number of   3Belt Type  Shape  Hole Dia. d    Hole Dia. d    Hole Dia. d    P.D.  O.D.  F  E
                                Teeth              (1mm increments)  (1mm increments)  (1mm increments)
                                 14                    4·5·6        4                   13.37 12.61  16  10
                                 15                    4~7         4·4.5·5              14.32 13.56  18  11
                                 16                                                     15.28 14.52
                                 18                    4~9          4~6                 17.19 16.43  20  13
                                 19                                              -      18.14 17.38
                   (Aluminum Alloy)                    4~10        4·5·6                        22  14
                   E-HTPA        20                                                     19.1  18.34
                                                                    4~8
                   E-HTPB        22                    4~12        4~10                 21.01 20.25  25  16
                                                                                        22.92 22.16
                                 24
                   E-HTPK
                                 25                    4~14        4~11       8~11·NK10  23.87  23.11  28  18
                                 26                    5~14        5~11                 24.83 24.07
                 (General Structural Steel    S3M060
                   or Carbon Steel)  28  S3M100   A    5~16        5~13       8~13·NK10  26.74 25.98  30  20
                                       S3M150
                   E-HTPM        30                    6~19        6~15       8~14·NK10  28.65 27.89  32  23
                                                                              8~17·NK10
                                                                                        30.56
                                 32
                                                                                                35
                                                                                            29.8
                                                                                                    25
                                                       6~21
                                                                   6~17
                   E-HTPP
                                 34                    6~24        6~18       8~18·NK10  32.47 31.71  40  28
                   (Stainless Steel)  36                                      8~19·NK10  34.38 33.62
                   E-HTPS        40                    8~28        8~23       8~23·NK10  38.2  37.44  44  32
                                 44                    8~32        8~26       8~25·NK10  42.02 41.25  48  36
                                 48                    8~34        8~28       8~27·NK10  45.84 45.07  50  38
                                 50                    8~36        8~30       8~29·NK10  47.75 46.98  52  40
                                 60                    8~42        8~34       8~35·NK10  57.3  56.53  61  46
                                 72                    8~54        8~46       8~45·NK10  68.75 67.99  74  58
          07-011                 Timing Pulleys
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