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MODEL
CM 4SB2
Hitachi
Power Tools
C
110 MM CUTTER
TECHNICAL DATA
AND
CM 4SB2
SERVICE MANUAL
LIST No. E710
Feb. 2006
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

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   Summary of Contents for Hitachi CM 4SB2

  • Page 1

    MODEL CM 4SB2 Hitachi Power Tools 110 MM CUTTER TECHNICAL DATA CM 4SB2 SERVICE MANUAL LIST No. E710 Feb. 2006 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT...

  • Page 2

    REMARK: Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s) is(are) used in the place of company name(s) and model name(s) of our competitor(s). The symbol(s) utilized here is(are) as follows: Competitors Symbols Utilized Company Name Model Name 4100NH MAKITA...

  • Page 3: Table Of Contents

    7-2. Cautions on the Name Plate ......................8 7-3. Precautions in Use ..........................9 8. DISASSEMBLY/REASSEMBLY GUIDE ..................10 8-1. Disassembly ........................... 10 8-2. Reassembly ............................ 14 8-3. Inspection after Reassembly ......................16 9. STANDARD REPAIR TIME (UNIT) SCHEDULES ................ 17 Assembly Diagram for Model CM 4SB2...

  • Page 4: Product Name

    In addition, the Model CM 4SB2 is novel and easy to operate thanks to the soft-grip handle and the compact body to differentiate from other products at a glance. With the new Model CM 4SB2, we aim to expand our market share.

  • Page 5: Selling Point Descriptions

    4-1. Selling Point Descriptions (1) Powerful 1,320 W motor with the class-top maximum power input The Model CM 4SB2 has high overload durability thanks to the most powerful motor in the class. Torque-temperature curve Model Model CM 4SB CM 4SA2 1.45 N .

  • Page 6

    However, there is a problem that such a wing bolt is apt to be loose during operation and lost without being noticed. In the case of the Model CM 4SB2, the base can be easily fixed and loosened just by raising and lowering the lever.

  • Page 7: Specifications

    5. SPECIFICATIONS 5-1. Specifications Model CM 4SB2 Item Max. cutting depth Capacity 34 mm (for 110 mm diamond wheel) 31.5 mm (for 105 mm diamond wheel) Max. diameter Diamond wheel size 110 mm external dia. x 1 mm thickness x 20 mm internal dia.

  • Page 8: Comparisons With Similar Products

    6. COMPARISONS WITH SIMILAR PRODUCTS 6-1. Specification Comparisons HITACHI Maker Model • CM 4SB CM 4SB2 CM 4SA2 Item Unit • 110 (4-3/8") Diamond wheel dia. 110 (4-3/8") 110 (4-3/8") 110 (4-3/8") 34 (1-3/8") Max. cutting depth 34 (1-3/8") 34 (1-3/8") 34 (1-3/8")

  • Page 9: Cutting Characteristics For Various Workpiece Materials

    The relationships between cutting speed and load current for various workpiece materials are shown in the graphs below. At the same cutting speeds, the load currents of the Model CM 4SB2 are lower than those of the Model CM 4SB and maker C's model.

  • Page 10: Precautions In Sales Promotion

    7. PRECAUTIONS IN SALES PROMOTION In the interest of promoting the safest and most efficient use of the Model CM 4SB2 Cutter by all of our customers, it is very important that at the time of sale the salesperson carefully ensures that the buyer seriously recognizes the importance of the contents of the Handling Instructions, and fully understands the meaning of the precautions listed on the Name Plate attached to each tool.

  • Page 11: Cautions On The Name Plate

    7-2. Cautions on the Name Plate Each tool is provided with a Name Plate which contains the following basic safety precautions in the use of the tool. (1) For China (2) For Taiwan (3) For the U.S.A. and Canada (4) For New Zealand --- 8 ---...

  • Page 12: Precautions In Use

    7-3-1. Wet cutting and dry cutting The Model CM 4SB2 can be used for "wet cutting" applications except the ones exported to China, U.S.A. and Canada due to limitation of the standards. Although the Model CM 4SB2 has a double-insulation structure to prevent shock hazard during wet cutting, such insulation is not always complete depending on the customer's operating conditions, degradation level of the main body, etc.

  • Page 13: Disassembly/reassembly Guide

    Parts List and the exploded assembly diagram for the Model CM 4SB2. Be sure to unplug the Model CM 4SB2 from the outlet before disassembly or replacement of the diamond wheel.

  • Page 14

    (3) Disassembly of the base ass'y (Fig. 3) 1 Remove the Retaining Ring (E-Type) For D8 Shaft [52] to remove the Link Lever [51]. Loosen the Special Bolt M6 [53] and remove the Washer M6 [50]. 2 Pull out the Roll Pin D6 x 36 [48] which connects the Gear Cover [41] and the Base [49]. [41] [53] [52]...

  • Page 15

    (5) Disassembly of the Spindle [38] (Fig. 6) Remove the Ball Bearing 606ZZC2PS2L [39] from the Spindle [38]. Push the end surface of the Spindle [38] with a hand press holding the side of the Gear [56] to remove the Gear [56]. NOTE: It is recommended to replace the Gear [56] together with the Spindle [38].

  • Page 16

    (7) Disassembly of the Armature [46] (Fig. 8) 1 Secure the Armature [46] and loosen the Special Nut M7 (right-hand thread) [42] to pull out the Pinion [43]. 2 Remove the Ball Bearing 629VVC2PS2L [44], Washer (A) [45], Ball Bearing 608VVC2PS2L [7] and Dust Seal [6] from both ends of the Armature [46].

  • Page 17: Reassembly

    8-2. Reassembly Reassembly can be accomplished by following the disassembly procedures in reverse. However, special attention should be given to the following items. (1) Mounting direction of Washer (A) [45] and Dust Seal [6] (Fig. 10-1) Check that there is a clearance between the Ball Bearing 629VVC2PS2L [44] and Washer (A) [45], and between the Ball Bearing 608VVC2PS2L [7] and the Dust Seal [6].

  • Page 18

    (5) Tightening torque • Bolt (Left Hand) M7 x 15 [54] 10.2 2.0 N m (100 20 kgf • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •...

  • Page 19: Inspection After Reassembly

    (6-2) Type II Switch Cord lead wires Noise suppressor Stator lead wires Fig. 13 Stator Switch Noise suppressor Cord Armature Fig. 14 8-3. Inspection after Reassembly (1) Product accuracy Runout of the diamond wheel: 0.6 mm maximum at the 100 mm dia. points (2) Checking the insulation distance Do not peel off the coating excessively at the connection of the internal wires.

  • Page 20: Standard Repair Time (unit) Schedules

    9. STANDARD REPAIR TIME (UNIT) SCHEDULES Variable MODEL 60 min. Fixed Work Flow CM 4SB2 Tail Cover Handle Cover Cord Housing Ass'y Cord Armor Stator Ass'y General Assembly Armature Ball Bearing (608VV) Ball Bearing (629VV) Bearing Bushing Pinion Gear Cover...

  • Page 21

    Hitachi Power Tools LIST NO. E710 ELECTRIC TOOL PARTS LIST CUTTER 2006 • • Model CM 4SB2 (E1)

  • Page 22

    PARTS CM 4SB2 ITEM CODE NO. DESCRIPTION REMARKS USED 325-526 FAN GUIDE 960-251 HEX. HD. TAPPING SCREW D5X65 930-703 BRUSH TERMINAL 340-651J STATOR ASS’Y 110V INCLUD. 3 FOR TPE 340-651C STATOR ASS’Y 110V INCLUD. 3 340-651D STATOR ASS’Y 120V INCLUD. 3 340-651E STATOR ASS’Y 220V...

  • Page 23

    PARTS CM 4SB2 ITEM CODE NO. REMARKS DESCRIPTION USED 956-872 BEARING CAP 303-323 DISTANCE PIECE 600-2VV BALL BEARING 6002VVCMPS2L 325-521 BEARING HOLDER 325-519 SPINDLE 606-ZZM BALL BEARING 606ZZC2PS2L HITACHI LABEL 325-520 GEAR COVER 325-536 SPECIAL NUT M7 325-517 PINION 629-VVM...

  • Page 24: Standard Accessories

    STANDARD ACCESSORIES CM 4SB2 ITEM CODE NO. DESCRIPTION REMARKS USED 941-057 WRENCH (HEX. SOCKET 10/19.2MM) 940-543 BOX WRENCH 10MM 303-648 WATER PLUG EXCEPT FOR USA, CAN, CHN 956-885 RUBBER CONNECTOR EXCEPT FOR USA, CAN, CHN 956-883 HOSE EXCEPT FOR USA, CAN, CHN...

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