Rotabroach Cobra CM/200/1 Operator's Manual
  1. Manuals
  2. Brands
  3. Rotabroach Manuals
  4. Drill
  5. Cobra CM/200/1
  6. Operator's manual

Rotabroach Cobra CM/200/1 Operator's Manual

Magnetic drilling machine
Hide thumbs Also See for Cobra CM/200/1:
Table of Contents

Advertisement

Quick Links

TM
Cobra
Magnetic Drilling Machine
Models CM/200/1 & CM/200/3
OPERATOR'S MANUAL
Rotabroach, Imperial works, Sheffield Road, Tinsley, Sheffield S9 2YL. England.
Tel: (++44) 0114 221 2500 Fax: (++44) 0114 221 2560
info@rotabraoch.co.uk
Email:
Web: www.rotabroach.co.uk
A MEMBER OF THE OSL GROUP OF COMPANIES
This machine (Serial No
) is CE approved.
RLL233

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Cobra CM/200/1 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Rotabroach Cobra CM/200/1

Summary of Contents for Rotabroach Cobra CM/200/1

  • Page 1 Cobra Magnetic Drilling Machine Models CM/200/1 & CM/200/3 OPERATOR’S MANUAL Rotabroach, Imperial works, Sheffield Road, Tinsley, Sheffield S9 2YL. England. Tel: (++44) 0114 221 2500 Fax: (++44) 0114 221 2560 info@rotabraoch.co.uk Email: Web: www.rotabroach.co.uk A MEMBER OF THE OSL GROUP OF COMPANIES This machine (Serial No ) is CE approved.

  • Page 2: Table Of Contents

    RLL233 Issue 4 Aug 2007 CONTENTS OF THE MANUAL. Page Specification of machine. General procedures and safety measures. Operating instructions. Extension cable selection. Mounting of cutters. Cutters and pilots. Remedies for hole making problems. Wiring diagram. Exploded view and component parts of complete machines. [10] Exploded view and component parts of gearbox and motor units.

  • Page 3: Cutting

    RLL233 Issue 4 Aug 2007 ROTABROACH MAGNETIC DRILLING MACHINE MODELS CM/200/1/ & CM/200/3 Maximum hole cutting capacity in .2/.3C steel = 65mm dia. x 50mm deep Arbor bore = 19.05mm (3/4") dia. Motor Unit Voltages 110v 230v normal full load 14 A 1400 W 1400 W...
  • Page 4 RLL233 Issue 4 Aug 2007 READ BEFORE USING THE MACHINE SAFETY PROCEDURES • When using electrical tools, basic safety precautions should always be followed to reduce the risk of electric shock, fire, and personal injury. • Do NOT use in wet or damp conditions. Failure to do so may result in personal injury. •...
  • Page 5 RLL233 Issue 4 Aug 2007 • On completion of the cut, a slug will be ejected. DO NOT operate the machine if the ejected slug may cause injury. [3] OPERATING INSTRUCTIONS Keep the inside of the cutter clear of swarf. It restricts the operating depth of the cutter. •...

  • Page 6: Mounting Of

    RLL233 Issue 4 Aug 2007 SPEED SELECTION The machine is equipped with two speed ranges, High, and Low, and a stepless variation of each range. The speed range is changed by the rotary change switch located on the gearbox side. Do not change gear while the motor is in motion.

  • Page 7: Cutters And

    RLL233 Issue 4 Aug 2007 [6] CUTTERS AND PILOTS Cutter & Pilot relationship. Cutter designation. Diameter. Pilot type. RA3057 RC, RCV 13 -18 RA359 19 - 52 RA3047 RA3013 RCL, RCVL 13 -17 RA3030 18 - 65 RA356 CRWC 18 - 36 RA3047 SRA3057 SRC, SRCV...

  • Page 8: Remedies For Hole Making

    RLL233 Issue 4 Aug 2007 REMEDIES FOR HOLE MAKING PROBLEMS Problem Cause Remedy 1) Magnetic base Material being cut may be too Attach an additional piece of metal won't hold effectively thin for efficient holding of under work-piece where magnet will magnet be located, or mechanically clamp magnetic base to work-piece...
  • Page 9 RLL233 Issue 4 Aug 2007 Problem Cause Remedy 3) Excessive drilling Incorrectly re-sharpened, Re-sharpen or replace pressure required worn or chipped cutter Coming down on swarf lying Clean work-piece. Take care not to on surface of work-piece start a cut on swarf Gibs out of adjustment or Lubricate gib and/or adjust grub lack of lubrication...

  • Page 10: Wiring

    RLL233 Issue 4 Aug 2007 WIRING DIAGRAM...
  • Page 11 RLL233 Issue 4 Aug 2007 [9] EXPLODED VIEW OF COMPLETE MACHINE...
  • Page 12 RLL233 Issue 4 Aug 2007 [9] Parts list for CM/200/1 & CM/200/3 Item Component Part No. Item Component Part No. Item Component Part No. Guard assembly RD25501 6.6 Internal washer RD4069 9.6 Chain bush RD4521 1.1 Guard RD35522 6.7 Washer RD4070 9.7 Countersunk set screw RD4018...
  • Page 13 RLL233 Issue 4 Aug 2007 [10] EXPLODED VIEW OF GEARBOX AND MOTOR UNITS Page 12...
  • Page 14 RLL233 Issue 4 Aug 2007 Part list of motor & gearbox(Cobra) Item Component Part No. Item Component Part No. Item Component Part No. Motor assembly (110v) RD25521 RD23330 7.7 Disk spring RD45506 Speed controller assembly (110v) Motor assembly (230v) RD25523 RD23343 7.8 Lock nut...
  • Page 15 RLL233 Issue 4 Aug 2007 [11] PIPE ADAPTOR KIT RD2311 FITTING INSTRUCTIONS Dependent upon the size of the pipe to be cut (see illustrations) attach adjustable angle plates RD3328 with cap screws RD4325 and washers RD4205 (4 • off each) to the magnet sides. Do not tighten. Locate the machine on the centreline pipe taking care that the magnet is in line with the longitudinal axis of the pipe.

  • Page 16: Wiring Of Mains

    RLL233 Issue 4 Aug 2007 [12] WIRING OF MAINS PLUG The wires of the mains lead are coloured in accordance with the following code: GREEN and YELLOW EARTH BLUE NEUTRAL BROWN LIVE As the colours of the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug - CONNECT AS FOLLOWS;...
  • Page 17 RLL233 Issue 4 Aug 2007 13] CUTTING SPEEDS. Typical cutting speeds (RPM) for various materials Cutter Surface speed. Cutter Surface speed. 239 398 796 1194 122 245 367 220 367 734 1102 119 239 358 205 341 682 1023 116 233 349 191 318 637 955 114 227 341 179 298 597 895...
  • Page 18 RLL233 Issue 4 Aug 2007 Cutter diameter and speed relationship High gear. Low gear. Selector No Cutter Dia. Selector No Cutter Dia. This data is presented for guidance only, and should be adjusted to suit site and material conditions.
  • Page 19 RLL233 Issue 4 Aug 2007 [14] REPLACEMENT OF MOTOR SUPPLY CABLE. TO REMOVE OLD CABLE AND CHAIN Ensure that the machine is disconnected from any source of power. Failure to do so may result in personal injury. Remove screws #73 and withdraw the control unit from the housing. •...
  • Page 20 RLL233 Issue 4 Aug 2007 The replacement is a complete factory produced assembly, and RD272 (230v) is illustrated below. TO REMOVE OLD CABLE FROM MACHINE The machine MUST be disconnected from any source of power supply before attempting to • conduct any maintenance work.

This manual is also suitable for:

Cobra cm/200/3

Table of Contents