Raise Boring Users Manual - Sandvik Mining and Construction
Contents
1. 29 30 Raise boring heads user manual Inspection In order to keeep yout reaming head in good working conditioning we recommend an inspection after each raise Check the following Weat pad diameter on stem For cracks in the wrench flats and in the thread of the stem Stem reamer base bolt joints Saddle bolts Conditioning of the journal seats in the saddles Contact surface between saddle reamer base Check the following on the cutters Button condition use cutter gauge 7008 9445 Seal bearing If the cutter is easy to rotate it needs re greasing follow the instructions on page 33 Serial number location on the different components see below Cutter serial number is found on the shaft end of the narrow part of The stem is marked at the bot Head serial number is found on the cutter and on the ball plug retainer tom flange and on the thread top one side of the head frame Cutter gauge 7008 9445 for measuring of button wear over the gauge button row of the cutters The figures tell you the percentage of the protrosion left Raise boring heads user manual Removal of stem Remove the inner saddles from position 1 and 2 Use the tool combination on page 8 Dismount the seal retainer ring Use the two releasing holes and tighten cross wise until the retainer ring comes loose 4 Dismount the twelve clamping bolts Remove the protection bolts from the2. Nut 7008 9120 Put some oil on the bolt before tightening Tighten to 300 Nm Button row overlapping On all Sandvik reaming heads there are button rows that This feature overlapping can be used if there is a CMR41 are tracking overlapping cutter with button row No 1 damaged or a CMR52 cutter with button row No 1 or 5 damaged Mount them in overlapping positions to let the cutter next to it outside or inside without damaged button rows cut the rock in this track Zo ceci O OOODODDb KIA O O O 4G QO 0 O DDD C O D DDD CUKK O ODDS KG 0 0 0 Ob 4G GO O ODS Td O DUDE KI O 02 DDB K 2 Row Row 41 52 Raise boring heads user manual Mounting of cutters The cutters are to be placed in different positions depending on which spacing is required 25 5 mm spacing is recommended for medium to hard rock 51 mm spacing is recommended for soft tock Cutter positioning on integral and segmented heads Reaming Head No of Type of Position Position head type dia cutters cutter 25 5 mm spacing 5 mm spacing CRH 2 CMR 41 CMR 52 CRH 3 CMR 41 1 3 CMR 52 2 4 CRH 3 1060 4 CMR 4 3 CMR 52 2 4 4 3 4 N w AN UJ EN 3 1084 CMR 41 27 52 27 2 CRH 4 1420 CMR 41 CMR 52 CRH 5 1524 CMR 41 CMR 52 wo AND pe Ul Aw AN
3. ON AK UJ O 00 ui Se o D N 6 7 CRH 6 65 1829 D e cc o Nw w 5 6 7 4 5 6 5 7 75 2134 CRH 8 85 8D 8L 2440 9 11 13 10 12 14 9 11 13 3 10 12 14 9 11 13 15 5 10 12 14 16 6 7 8 9 10 12 13 14 5 6 7 8 9 10 14 12 13 14 7 8 9 10 11 12 3 4 13 14 15 l6 D gt gt TO MO CRH 100 105 JA J w RIN BIN Note Cutter positioning when saddle 7008 2013 is used in position 1 when 9 9 7 8 stem is used in a reaming head with 340 mm stem fit or when 12 1 4 stem is used in a reaming head with 360 mm stem fit 25 5 mm spacing pos 1 CMR 52 pos 2 CMR 52 5 mm spacing pos 1 CMR 52 pos 2 CMR 41 For cutter mounting of other Sandvik cutter types consult your local Sandvik representative CRH 3 950 mm part number 7008 1009 30 is designed for 7 7 8 stem only CRH 3 1084 mm part number 7008 1311 30 is designed for 9 or 9 7 8 stems and CMR 41 27 CMR 52 27 cutters only Raise boring heads user manual Mounting of cutters The cutters are to be placed in different positions depending on which spacing is required 25 5 mm spacing is recommended for medium to
4. CRH 100 1050 Q 3094 122 Q 3094 122 Raise boring heads user manual Mounting of cutters IOE 3130 123 3500 138 CRH IOSE D 3047 120 Raise boring heads user manual Mounting of cutters CRH I2E 3534 139 3840 151 20 Raise boring heads user manual Mounting of segments CRH 6S 7S 8S IOSD IOE IOED IOSE Segment Segmented heads are designed in order to facilitate transportation through narrow openings The reamer base is transported with the segments dismounted until the col Reamer base laring site is reached Reaming Base head Segment No of head type part no part no cutters CRH 6S 7008 1418 21 7008 2101 20 CRH 7S 7008 1421 21 7008 2101 20 CRH 8S 7008 1424 21 7008 2101 20 1050 7008 1831 21 7008 2142 20 Clean all contact surfaces Oil bolts nuts wedge and slot Fit the upper wedge wedge Hook the segment on to the head as shown Start to 7008 9134 tighten the upper wedge joint Bolt 7008 9134 01 Lock washer 7008 9135 0
5. Raise boring heads user manual Contents Different raise boring methods Free 4 General recommended drilling parameters Mo OX CAC AICS Lederne 8 Gauge saddle system to reduce reamer diameter 10 Mos veven 11 Mos NN dn 13 NE Pn 14 CELE POSTOS 17 OL vere 20 SCTE DOS Ls 22 Transport dimensions and weights 26 Inspeettom 30 31 VEN 32 Ke TN MET 33 DAL re E e NEU 35 e 26 gt Raise boring methods Raise boring Access on two rock faces 0 6 6 m range Used for ore passes ventilation raises penstocks etc Drill pipes under tension Horisontal boring Access on two rock faces e 0 6 4 5 m range Used in civil construction in urban areas ex cable tunnel escape tunnels sewage tunnels etc Rock stability important Drill pipes under tension Blind boring Access on one rock face 00 6 1 8 m range Used for slot raises ote passes manways Drill pipes under compression Needs drill pipe stabilisation Down boring with pre drilled pilot hole Access on one rock face and an opening below e 0 6 1 8 m range Used for drilling large fill holes Drill pipes under compression Needs drill pipe stabilisation General recommended reaming parameters Max recomme
6. Raise boring heads user manual Mounting of segments Segment positioning on CRH I2bE Reamer base 7008 1338 20 0390 stem fit Reaming Head head type dia mm CRH I2E 3534 No of Segment small Segment large segments part number part number Raise boring heads user manual Mounting of segments 25 26 Raise boring heads user manual Transport dimensions and weights Integral reaming heads Note Weights as noted in tables are only to be used as a guide Reaming head Transport dimensions mm Weight Weight complete incl saddles incl saddles amp stem type kg kg 0 2200 COR 100 2280 Stem 12 1 4 30 Stem 12 1 4 40 Stem 13 3 4 40 Raise boring heads user manual Transport dimensions and weights Segmented reaming heads Note Weights as noted in tables are only to be used as a guide Hm Transport dimensions mm Weight piece Weight complete incl incl saddles saddles segments amp stem Stem 12 1 4 Stem 13 3 4 40 27 28 Raise boring heads user manual Transport dimensions and weights Extendable reaming heads Note Weights as noted in tables
7. 28 30 32 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 Position 5 mm spacing 5 6 7 8 9 10 12 13 14 15 16 17 18 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 4 5 6 7 8 9 10 11 12 13 14 4 2 4 2 4 2 4 2 3 3 3 3 3 2 15 16 17 18 19 20 21 22 23 24 25 26 3 4 5 6 7 8 9 10 11 12 13 14 2 15 16 17 18 19 20 21 22 23 24 25 26 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 2 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 For cutter mounting of other Sandvik cutter types consult your local Sandvik representative Cutter positions in parantheses A are for optional use when heavy gauge wear is expected Raise boring heads user manual Mounting of cutters CRH 2 CRH 3 CRH 4 CRH 5 CRH 6 D 660 26 Q 950 37 D 1420 56 Q 1524 60 1829 72 Q 1060 42 1084 43 1 de 65 7 75 8 81 1829 72 Q 2440 96 CRH 8D CRH 8S CRH 9L Q 2447 96 D 2440 96
8. are only to be used as a guide Reamer Transport dimensions mm Weight piece incl saddles mm A B D kg FSeamene 2109 soomaa fm soomaa m em mecnm pm _ 8 SOS Reamer base CREED so is m 75 Seamem am o o fm FSeamene 245 o I f mecnm fe mens seen fan so nanda oso fem manes De fo fm SSS S Ll ET Stem 15 50 Complete reamer incl base segments and 13 3 4 stem weight diameter kg Reaming head type 3130 8 3500 3824 3687 4042 3047 3372 3696 CRH 1056 umo 110750 isso wo ES ES __ HMM CRH IOSE Raise boring heads user manual Transport dimensions and weights 12 Note Weights as noted in tables are only to be used as a guide Reaming head Transport dimensions mm CRH I2E xe m nos iso suo wo 95 ze iw nos is wo xs vo jus sn oso aw iw nos is ss wo me m ws ix ww s iors ve sn osse xe im nos iso wo s jam ve so Reaming Weight head Reamer base Large segment Small segment Complete incl base I2E kg pce incl saddles kg pce incl saddles kg pce incl saddles Stem kg segments and stem kg
9. hard rock 51 mm spacing is recommended for soft tock Cutter positioning on extendable heads CRH IOE Reamer base 7008 1031 20 0360 stem fit and 7008 1331 20 2390 stem fit Reaming Head No of Type of Position Position head type dia cutters cutter 25 5 mm spacing 51 mm spacing CRH IOE 6 7 8 9 10 12 13 14 15 16 CRH IOE 6 7 8 9 10 12 14 16 17 18 19 20 CRH IOE 6 7 8 9 10 11 12 4 16 17 18 19 20 21 22 CRH IOED Reamer base 7008 1440 20 0360 stem fit and 7008 1340 20 00390 stem fit Reaming Head No of Type of Position Position head type dia cutters cutter 25 5 mm spacing 51 mm spacing CRH IOED 6 7 8 9 10 12 I3B 148 15 16 17 18 CRH IOED 6 7 8 9 10 11 12 14 15 16 17 18 19 20 CRH IOED 6 7 8 9 10 11 12 4 6 148 15 16 17 18 19 20 3 5 CRH IOED 5 7 9 11 13 15 17 19 21 4 6 8 10 12 14 16 18 20 22 CRH IOSE Reamer base 7008 1630 20 0360 stem fit Reaming Head No of Type of Position Position head type dia cutters cutter 25 5 mm spacing 51 mm spacing mm CRH IOSE 3047 6 7 8 9 10 12 13 14 15 16 CRH IOSE 3372 6 7 8 9 10 12 13 14 15 16 17 18 CRH IOSE 3696 6 7 8 9 10 12 3 14 15 16 17 18 19 20 Note Cutter positioning when saddle 7008 2013 is used in position 1 when 0 12 1 4 stem is used in a reaming head with 360 mm stem fit with exception for CRH
10. jacking holes in the stem flange Insert four of the loose bolts and tighten cross wise until the stem is released Put a rod through the stem and attach the lifting equipment Pull the stem out Important When the stem and the saddles are reassembled new bolts and nuts must be used 3 32 Raise boring heads user manual Wear pad replacement Replace the wear pads when the diameter D 1s less than QD shown in the table below Pilot hole OD Wear pads Wear pads thin type diameter mm Quantity Part No 7 7 8 7008 9020 9 7008 9023 9 7 8 7008 9025 05 7008 9028 05 12 1 4 7008 9031 05 13 3 4 7008 9034 05 15 7008 9038 05 Remove the worn out wear pads by grinding away the Fix the wear pads in position with clamps Important welding joint Pre heat the area where the wear pads are to Make sure the ID of the wear pad corresponds with the OD be welded to 370 450 C Should the temperature drop to of the stem below 370 Reheat before continuing VA ec ls Un PUT a LS Fill the welding points properly using our recommended welding wire After welding the diameter over the wear pads must be checked If some peeks exceed D max grind with a silicon carbide grinding wheel Recommended diameter over wear pads Pilot hole D max mm 7 7 8 9 9 7 8 I2 1 4 13 3 4 Make the welding joints 10 mm longer than the wear pad 5 and end with a smoo
11. 1 Nut 7008 9135 Fit the slot wedge Tighten all bolt joints to 2 3 torque Complete the segment assembly by tightening the bolt nut 3800 Nm Tighten to full torque 1200 Nm Begin with joints Start with 2 3 torque 800 Nm Tighten to full upper wedge Repeat on slot wedge torque 1200 Nm Example of tool combination see page 8 Segment part number 008 XXXX Y Y ex 008 2109 20 without saddles 7008 2109 30 with saddles Raise boring heads user manual Mounting of segments Segment positioning on CRH IOE Reamer base 7008 1031 20 0360 stem fit and 7008 1331 20 60390 stem fit Reaming Head No of Segment Segment Segment head type dia segments part number part number part number CRH IOE 3500 mo gne 7008 2109 20 7008 2110 20 CRH IOE 3824 7008 2109 20 7008 2110 20 7008 2111 20 Segment positioning on IOED Reamer base 7008 1440 20 0360 stem fit and 7008 1340 20 0390 stem fit Reaming Head No of Segment Segment Segment head type dia segments part number part number part number mm CRH IOED 3824 7008 2109 20 7008 2110 20 7008 2111 20 Segment positioning on IOSE Reamer base 7008 1630 20 0360 stem fit Reaming Head No of Segment Segment Segment head type dia segments part number part number part number ef CRH IOSE 3372 CRH IOSE 3696 7008 2135 20 7008 2136 20 7008 2135 20 7008 2136 20
12. 10SE or when 13 3 4 stem is used in a reaming head with 390 mm stem fit with exception for CRH12SE 25 5 mm spacing pos 1 CMR 52 pos 2 CMR 52 51 mm spacing pos 1 CMR 52 pos 2 CMR 41 For cutter mounting of other Sandvik cutter types consult your local Sandvik representative Raise boring heads user manual Mounting of cutters The cutters are to be placed in different positions depending on which spacing is required 25 5 mm spacing is recommended for medium to hard rock 51 mm spacing is recommended for soft rock Cutter positioning on extendable heads I2E Reamer base 7008 1338 20 0390 stem fit Reaming head type CRH I2E CRH I2E CRH I2E CRH I2E CRH I2E CRH I2E CRH I2E CRH I2E No of cutters cutter 30 32 CMR 4I CMR 52 32 36 CMR 4I CMR 52 Position 25 5 mm spacing 7 9 11 15 15 17 2 8 10 12 14 16 18 7 9 11 13 15 17 19 2 8 10 12 14 16 18 20 7 9 11 13 15 17 19 21 2 4 6 8 2 2 5 6 5 6 5 10 12 14 16 18 20 22 7 9 11 13 15 17 19 21 23 8 10 12 14 16 18 20 22 24 7 27 95 1 13 15 17 19 21 23 5 2 4 6 8 10 12 14 16 18 20 22 24 26 3 5 7 9 11 13 15 17 19 21 23 25 2 4 6 8 10 12 14 16 18 20 22 24 26 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 2 4 6 8 10 12 14 16 18 20 22 24 26
13. 7008 2138 20 21 22 Raise boring heads user manual Mounting of segments Segment positioning IOE Raise boring heads user manual Mounting of segments CRH I2E The CRH 12E system is a user friendly design which facili tates transportation through narrow openings and substan cially reduces the time for assembly The reamer base is transported with the segments dis mounted until the collaring site is reached Reamer base Lock washer Bolt 7008 9134 01 7008 9135 01 7008 9135 Clean all contact surfaces oil Begin with the wedge 1n the middle bolts nuts and wedges Hook and work your way outwards Tighten the segments on to the head as the bolts to 2 3 torque 800 Nm shown Start to tighten the upper Continue with the bolt joints on the wedge joints sides and at the bottom of the seg ments Tighten to 2 3 torque 800 Nm Tighten to full torque 1200 Nm Use the same sequense as when tightening to 2 3 torque Use the slot wedge bolts if it is impossible to mount the bolts at the bottom of the segments Example of tool combination see page 8 23 24
14. B SE 811 81 Sandviken Sweden Tel 46 26 26 20 Fax 46 26 26 23 HR 13121
15. The net bit load and drilling speed RPM is chosen de pending on rock characteristics lt max recommended bit load and RPM Utilise the highest RPM the rock formation and the ma chine allows 5 max recommended bit RPM together with the correct bit load for optimum rate of penetration and bit service life Reduce the RPM before reducing the bit load For optimum performance use sufficient flushing to clean the hole and avoid regrinding of cuttings Use min 800 litres min of water for efficient flushing General information for Sandvik pilot bits Diameter Weight Pin connection Mas bit load Rec drilling speed mm inch Kg Lbs APIreg Lbs RPM 7006 7229 25X X X 9 45 4 1 2 7006 7251 25X X X 97 8 62 65 8 7006 7279 25X X X 11 75 65 8 7006 7311 25X XX 121 4 100 65 8 7006 7349 25X X X 133 4 120 6 5 8 7006 7381 25X X X 15 160 7 5 8 Note Bit type SCMH is a selected bit for all rock formation Approx IADC code is 725 Raise boring heads user manual Sandvik reaming heads The Sandvik reaming heads are available in different types Integral heads ex CRH10D Segmented heads ex CRH10SD Extendable heads ex CRH10E Integral bead CRH10D The figure in the name represents the reaming head diameter in feet CRH10D 10 Designs for other applications are available ex blind boring up or down and for horizontal boring Segmented heads are used when reduced transport di mension and wei
16. damaged Inspect the retainer pin 7008 9118 Re place if showing excessive wear a E Mount the protection ring 7008 9113 an weld four joints 90 apart Use MIG weld ing Recommended welding wire O 1 2 mm OK AUT ROD 12 51 or similar Spares to re seal cutter Part No 7008 9110 Seal 7008 9101 7008 9111 7008 9115 7008 9113 Seal retainer Snap ring O ring Lock ring 35 36 Raise boring heads user manual Inspection report Reaming head CRH Dia mm Reaming head No Stem check list Saddle check list Wear pad dia mm Bolt joints OK Wear pad OK Yes No OK for use in next raise Wrench flats OK Yes No Others Thread OK Yes No Bolt joints OK Yes No Stem OK for use in next raise Yes No Cutter check list u 12 4 Raise boring heads user manual S9JON ____ ___ _ _ _ _ _ _ __ _ _ _ _ 12 18 16 12 smoy soau sam oseoasrou iO edd oN renos Jo 41equinN uo33ng 92195 4933n JO adAL 00000000000000000000000000 usig 93eg 000000000000000000000000000000 UOI3 20 0000000000000000000000000000000000000 ON 93315 uorm edsur ensiA 37 Raise boring heads user manual jueuudinbo 5 ENSIA 5930 38 SANDVIK HENCE Sandvik Mining and Construction Tools A
17. e four welding joints on the seal retainer Use a small cutting disc Remove protection ring 7008 9113 Remove the two seal halves from both the retainer ring and the cutter shell Remove the O ring 7008 9112 from the journal Install the two seal halves 7008 9110 in both the retainer ring and the cutter shell Important Follow the mounting instruc tions from the seal manufacturer carefully Instructions can be obtained from your local Sandvik representative Re grease the cutter according to the re greasing instruction I his completes the seal change L TT Le Remove the snap ring 7008 9111 Use a hammer and a small chisel Fill the cutter with grease before dismantling the seals to avoid dirt coming into the bearing system Clean the snap ring groove the O ring groove and the seal seat carefully Ensure that the seal seat is in good condition If not file the marks and nicks Make sure muck or dirt comes in to the bearing system Mount the O ring 7008 9112 Mount the retainer ring carefully E g use a hammer and clamp for smooth mounting Mount the snap ring 7008 9111 Note Always use a new O ring and snap ring Make a puller tool by using two bolts nuts and a small U beam Tack weld the two bolts to the retainer ring Remove the retainer ring by tightening the nuts and tapping the retainer ring with a hammer The retainer ring can be reused if il is not
18. ght is required Extendable heads are used for increased flexibility to drill different diameters using the same base head All Sandvik reaming heads have bolted components for improved flexibility and ease of service and assembly Segmented head CRH10SD The reaming heads are designed with different size of centre hole in order to fit stems for different pilot hole sizes Part and serial numbers are welded on the side of the reamer as a reamer ID Extendable head CRHI0E Raise boring heads user manual Mounting of saddles frame If there are two position marks the upper one refers to the position nearest the head centre The positions matked the side of the head Dowel pins locate the saddles in the correct position Note Do not attach the saddles for position 1 and 2 before the stem is mounted All bolts nuts and contact surfaces must be flat cleaned and oiled before mounting 800 Nm Finish by tighten to full strength 1200 Nm Always use new bolts and nuts even when re e Tighten the bolts crosswise to 2 3 of full torque assembling The Nord lock washers are reusable Example of tool combination Bolt 7008 9134 01 lt SS Lock washer 7008 9135 01 Nut 7008 9135 Raise boring heads user manual Mounting of saddles Different saddle types are used depending on positioning A special inner saddle 7008 2013 is used
19. id on all Sandvik reaming heads that takes gauge saddles type 7008 2024 or 7008 2030 This option can be used in long raise with heavy gauge button 7008 2024 7008 2025 wear and makes it easier to reach the rock face again after 7008 2026 lowering the reaming head for any service The D type 7008 2030 gauge saddles have different part numbers and markings 7008 2031 see table and illustrations in order to reduce the risk of 7008 2032 mixing different types on the same reamet STEP 1 ob GAUGE SADDLE 7008 2024 or 2030 Marking STEP I STEP2 D 21mm GAUGE SADDLE 7008 2025 or 2031 Marking STEP STEP3 oD 42mm GAUGE SADDLE 7008 2026 or 2032 A Marking STEP Il Important Make sure to use four gauge saddles of the same type same part no and marking together on the reamer at all times to keep the correct profile Marking on saddle side o one hole drilled oo two holes drilled 000 three holes drilled o one hole drilled oo two holes drilled OOO three holes drilled aise boring heads user manual Mounting of stem Place the head on its side Clean the centre hole Use a suitable solvent to remove the rust protection Apply a lot of grease before fitting the stem Insert the stem Put a rod through the stem for easier Push the stem into position handling Clean and put a lot of grease on the inlet par
20. nded operating cutter load 27 tonnes 60 000 Lbs Max recommended reaming head speed see graph below The net operating cutter load is chosen depending on ma chine drill pipe capacity and rock characteristics Increase the cutter load max cutter load and or the machine drill pipe capacity limit as long as increased load results in increased rate of penetration The reaming head speed RPM is chosen depending on reaming head diameter and rock characteristics Utilise the optimum fastest RPM the rock formation allows lt max recommended reaming head speed together with optimum net cutter load Reduce the RPM before reducing the cutter load Cutter maintenance The raise boring cutter bearings are operating under extreme conditions exposed to constant high operating loads varying degree of uncontrolled shock loads in com bination with high temperatures It is of vital importance to use the recommended type of lubricant suitable for these conditions and to relubricate the cutters on a regular basis in order to obtain an optimum cutter service life The interval between re greasing needs to be more fre quent with increased temperature as the lubricant proper ties ate affected by increased operating temperatures See page 33 for the re greasing instruction Max recommended reaming head R P M a I 15 2 25 3 35 4 45 5 5 5 6 Reaming head O M Max recommended operating bit load Max recommended speed
21. t of Oi the bolts Pre tighten the bolt crosswise to 800 Nm the stem Use ordinary machine grease 0 5 kg Tighten to full torque 1200 Nm Bolt 7008 9134 01 Lock washer 7008 9135 01 dn Nut 7008 9135 Clean the O ring groove in the retainer ring and insert the O ring Raise boring heads user manual Mounting of stem Clean the seal seat Slide the V ring over the top of the stem Apply silicone sealant on top of the V ring around the stem and push it into position Note Do not use the V ring in Lower the retainer ring over the stem into position Make reaming bead CRH3 and sure both seals are properly seated Ne V ring Tighten the bolts cross wise until the retainer ring is seated Make up torque 220 Nm Bolt 7008 9137 Mount the saddles in position 1 and 2 see picture on page 8 The head assembly is now complete Seal retainer Part No Stem fit dia mm 7008 9380 7008 938 7008 9398 Raise boring heads user manual Mounting of cutters The positions are marked on the side of the head frame If Lift the cutters into position See table on page 14 16 there are two position marks the upper one refers to the for correct positioning position nearest the head centre Bolt 7008 9119 Saddle Nord Lock washer 7008 4341 19
22. th finish Raise boring heads user manual Re greasing of cutters J 18 Remove the conical plugs 7008 9257 from the seal Clean the centre hole carefully Install the re greasing plug retainers Use proper allen key wrench 7008 9447 and attach the grease gun Start pumping until grease comes out through one of the Rotate the cutter 20 revolutions Continue to pump until relief holes Clean the thread and mount the plug Put some grease comes out through the other relief hole Mount a Loctite222 on the thread before tightening Use the allen conical plug in this hole in the same way key wrench Spares for re greasing cutter Part No 7008 9115 O ring 7008 9257 Conical plug 7008 9114 Snap ring LE 7008 9482 Protection plug Re install the ball plug retainer Mount a new snap ring 7008 9132 01 Cutter grease 0 4 kg tube and a plastic protection cap together with new o rings 33 34 Raise boring heads user manual Re greasing option If it is not possible to re grease the cutter through the centre hole as described on page 33 we recommend to re grease the cutter through the seal retainer Attach a grease pump and start pumping Continue to bump until grease comes out through the relief hole in the opposite seal retainer Rotate the cutters 20 revolutions Mount two new conical plugs in each seal retainer Raise boring heads user manual Seal replacement Cut th
23. to move cutter in and the reaming head type The most frequent dressings position 1 closer to the pilot hole when required and is used as per the illustration below The part numbers are 7008 to keep a maximum spacing to obtain efficient spalling into 2X XX some additional saddles modified for small diam the pilot hole See illustration below eters reaming heads are not shown below The number of Saddle 7008 2013 is required in position 1 when the different types varies with the reaming head diameter 9 97 8 stem is used in reaming heads with 340 mm and type stem fit A new and improved gauge saddle system is implemented 12 1 4 stem is used in reaming heads with 360 mm on all D type reaming heads to make it possible to stem fit exception CRH10SE reduce the reamer diameter by changing the gauge saddles 13 3 4 stem is used in reaming heads with 390 mm only See page 10 for more detailed information stem fit exception CRH12E Integral amp segmented heads D type heads CRH I2E Use saddle 7008 2013 to move cutter in pos closer to the pilot hole Raise boring heads user manual Mounting of saddles Gauge saddle system with reduced reamer diameter option The gauge saddle system on D type reaming heads Diameter Saddle makes it possible to reduce the reamer diameter in two steps by changing the gauge saddles only see illustrations HS ING part No This option is val
Download Pdf Manuals
Related Search