Hitachi CM 4ST Technical Data And Service Manual
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Hitachi CM 4ST, LIST No. CM 4ST: E725 Aug. 2010 [SAME FEATURES AS THE CONVENTIONAL MODELS] Dust-proof Switch Low vibration and noise Compact body Smart gear cover and base The Model CM 4ST is the 4” cutter version of the low-end ST series model based on the CM 4SB. Overload strength is increased by adopting a powerful motor with maximum output of 1,950 W, while a rubbe r cover over the switch trigger section and lock button prevents the entry of dust, thus improving durability. We are marketing this new 4” cutter with these features to increase market share and expand sales. PRODUCT NAME Hitachi 4” Cutter Model CM 4ST • Cutting and scribing of concrete, stone brick,
Hitachi CM 4ST, REMARK: • For more information about HANDLING INSTRUCTIONS, visit our website at: http://www.hitachi-koki.com/manual_view_export/ • 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 C MAKITA 4100NHZ
Hitachi CM 4ST, CONTENTS Page SELLING POINTS -------------------------------------------------------------------------------------------------------------- 1 SPECIFICATIONS -------------------------------------------------------------------------------------------------------------- 3 1. Specifications --------------------------------------------------------------------------------------------------------------------------------- 3 COMPARISON WITH SIMILAR PRODUCTS---------------------------------------------------------------------------- 4 1. Comparison of Specifications --------------------------------------------------------------------------------- 4 PRECAUTIONS ON SA
Hitachi CM 4ST, -1- <Comparison of motor performance> Maker Model Item HITACHI CM 4ST C Maximum output W 1,950 1,640 Overload strength % 121 100 0 50 100 150 200 250 300 350 100% 121% HITACHI CM 4ST 1.15 1.40 Torque (N•m) Stator coil temperature rise (°C) C Excellent overload durability The powerful motor with maximum output of 1,950 W achieves overload durability 1.2 times greater than that of the conventional model. Dust-proof switch Because the switch trigger section and lock button are both covered with rubber, this model is structured to prevent the entry of dust into the handle that contains the switch and
Hitachi CM 4ST, -2- <Comparison of size> Maker Model Item HITACHI CM 4ST C L1 mm 214 228 L2 mm 201 204 L3 mm 38 40 H mm 156 168 L3 L2 L1 H Low vibration and noise The rubber between the ball bearing and outer frame on both sides of the armature ensures less vibration and noise with no load than the conventional model. <Vibration and noise with no load (ø110 mm rim type with diamond wheel attached> Maker Model Item HITACHI CM 4ST C Noise with no load m/s 2 2.0 3.7 Vibration with no load dB 87 90 Compact body The compact body improves operability compared with the con
-3- 1. Specifications Model Item CM 4ST Capacity Max. cutting depth 34 mm (for 110 mm diamond wheel) 31.5 mm (for 105 mm diamond wheel) Diamond wheel size Max. diameter 110 mm external dia. x 1 mm thickness x 20 mm internal dia. (Korea only: 15 mm internal dia.) Type of motor AC single phase commutator motor Type of switch Trigger switch Enclosure • Housing ----------------------------
Hitachi CM 4ST, -4- L1 L2 L3 H 1. Comparison of Specifications (Superior specifications: ) HITACHI Maker Model Item CM 4ST CM 4SB2 C Diamond wheel dia. mm 110 (4-3/8”) 110 (4-3/8”) 110 (4-3/8”) Max. cutting depth mm 34 (1-3/8”) 34 (1-3/8”) 34 (1-3/8”) No-load speed min -1 13,000 11,500 13,000 Power input W 1,300 1,320 1,300 Catalog specifications Weight (excluding cord) Kg 2.9* (6.4 lbs.) 2.8* (6.2 lbs.) 2.9* (6.4 lbs.) Voltage V 220 220 220 Speed min -1 13,900 11,700 13,400 Noise level dB 87 85 90 No-load Vibration level dB 106 (2.0 m/s 2 ) 103 (1.4 m/s 2 ) 111 (3
Hitachi CM 4ST, -5- 1. Safety Instructions In the interest of promoting the safest and most efficient use of the Model CM 4ST Cutter by all of our customers, it is very important when concluding a sale that the salesperson carefully ensure that the buyer seriously recognizes the importance of the Handling Instructions, and fully understands the precautions listed on the Name Plate or Caution Plate attached to each tool. A. Handling instructions Although every effort is made in each step of design, manufacture, and inspection to provide protection against safety hazards, the dangers inherent in the use of any elect
-6- Cutting grain (Diamond) Bonding agent (BOND) Diamond layer Slit Wheel base Fig. 1 • Single-operation cutting must be restricted to cutting depths of 20 mm or less, at slow feed speed. Cutting at deeper than 20 mm must be done in two or three separate cutting operations. Attempting single- operation cutting at deeper than 20 mm will shorten the service life of the
Hitachi CM 4ST, -7- Gear Cover [41] Ball Bearing 606ZZC2PS2L [40] Spindle And Gear Set [39] Bearing Holder [38] Ball Bearing 6002VVCMPS2L [37] Distance Piece [36] Bearing Cap [35] O-Ring [34] Seal Lock Scre w (W/Sp. Washer) M5 x 25 [48] Spindle And Gear Set [39] O-Ring [34] Ball Bearing 6002VVCMPS2L [37] Distance Piece [36] Bearing Cap [35] Bearing Holder [38] Push Jig 60 mm 37 mm Fig. 3 1. Precautions on Disassembly and Reassembly [Bold] numbers in the descriptions below correspond to item numbers in the Parts List and exploded assembly diagram for the Model CM 4ST. Note on disassembly: Before sta
-8- Ball Bearing 629VVC2PS2L [43] Washer (A) [45] Dust Seal [8] Ball Bearing 608VVC2PS2L [9] Fig. 5 4. Disassembly of the armature (Fig. 4) (1) Use a wooden or plastic hammer to gently tap on the end surface of the Housing Ass’y [16], in order to loosen and remove the Armature [47]. (2) Use a bearing puller to extract the Pinion [42] and Ball Bearing 629VVC2PS2L [43], and then remove Wa
Hitachi CM 4ST, -9- Fig. 7 (1) For products with noise suppressor (2) For products without noise suppressor Switch [14] Noise Suppressor [23] Switch [14] Fig. 6 (1) For products with noise suppressor (2) For products without noise suppressor Internal Wirin g Wirin g Dia g ram Switch [14] Stator Ass'y [5] Cord [29] A rmature [47] Noise Suppressor [23] A rmature [47] Stator Ass'y [5] Switch [14] Cord [29]
Hitachi CM 4ST, -10- Upon completing reassembly after repair, measure the insulation resistance and conduct a dielectric strength test. Insulation resistance: 7 MΩ or more using AC 500 V megohm tester Dielectric strength: AC 4,000 V/1 minute, with no abnormalities (220 V to 240 V) AC 2,500 V/1 minute, with no abnormalities (110 V to 127 V) After no-load operation for 30 minutes, the no-load current values should be as follows: Voltage (V) 110 120 127 220 230 240 Current (A) Max. 5.0 4.4 4.6 2.7 2.6 2.7 Diamond wheel runo
-11- MODEL Variable Fixed 10 20 30 40 50 60 min. Work Flow CM 4ST General Assembly Handle Cover Cord Cord Armor Switch Base Armature Ball Bearing 608VVC2PS2L Ball Bearing 629VVC2PS2L Pinion Gear Cover Spindle And Gear Set Bearing Holder Bearing Cap Ball Bearing 606ZZC2PS2L Ball Bearing 6002VVCMPS2L Housing Ass'y Stator Ass'y STANDARD REPAIR TIME (UNIT) SCHEDULES
Hitachi CM 4ST, Model CM 4ST CUTTER LIST NO. E725 (E1) 2010 · 8 · 16 55 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 17 18 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 501 19 15
Hitachi CM 4ST, PART S CM 4ST DESCRIPTION REMARKS 1 317-758 FAN GUIDE 1 2 317-756 O-RING 1 3 960-251 HEX. HD. TAPPING SCREW D5 X 65 2 4 930-703 BRUSH TERMINAL 2 * 5 340-783C STATOR ASS'Y 110V 1 INCLUD. 4 * 5 340-783G STATOR ASS'Y 110V 1 INCLUD. 4 FOR TPE * 5 340-783D STATOR ASS'Y 120V-127V 1 INCLUD. 4 * 5 340-783E STATOR ASS'Y 220V 1 INCLUD. 4 * 5 340-783F STATOR ASS'Y 230V-240V 1 INCLUD. 4 6 930-804 TERMINAL M4.0 (10 PCS.) 2 7 983-858 SEAL PACKING 1 8 317-757 DUST SEAL 1 9 608-VVM BALL BEARING 608VVC2PS2L 1 10 956-866 RUBBER COVER (B) 1 11 3
Hitachi CM 4ST, PART S CM 4ST DESCRIPTION REMARKS 37 600-2VV BALL BEARING 6002VVCMPS2L 1 38 333-240 BEARING HOLDER 1 39 333-241 SPINDLE AND GEAR SET 1 40 606-ZZM BALL BEARING 606ZZC2PS2L 1 41 333-126 GEAR COVER 1 42 333-242 PINION 1 43 629-VVM BALL BEARING 629VVC2PS2L 1 44 318-647 RUBBER RING 1 45 958-915 WASHER (A) 1 46 940-220 WOODRUFF KEY 2.5 X 8 1 * 47 360-900C ARMATURE 110V 1 * 47 360-900D ARMATURE 120V-127V 1 * 47 360-900E ARMATURE 220V 1 * 47 360-900F ARMATURE 230V-240V 1 48 303-327 SEAL LOCK SCREW (W/SP. WASHER) M5 X 25 2 49 303-326 BOLT (LEFT HAND) M7 X 15 1 50 956-878 WASHER (A) 1 51 949-576 ROLL PIN D6 X 32 (10 PCS.) 1 52 317-759 BASE 1 53 303-330 SLEEVE 1 54 949-45
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