Assembly and maintenance instruction - Sparks Shopsparks-shop.eu/images/stories/manual/bf20ballscrew.pdfWhen assembling the BF20 and BF20L from trapezoidal threads to recirculating

OPTIMUMM A S C H I N E N - G E R M A N Y

© 2

007

GB

Assembly and maintenance instruction
Version 2.0
BF20/ BF20L

Recirculating ball screw

Keep for future reference!

5. Dezember 2007 Page 1Recirculating ball screw assembly and maintenance instruction ; Version 2.0

Assembly and maintenance instruction recirculating ballOPTIMUMM A S C H I N E N - G E R M A N Y

© 2007

G

1 Assembly and maintenance instruction recirculating ball screw

Recirculating ball screw

The delivery of the ball screw nut and spindle is performed corrosion-proof and ready-for-assembly.

The ball-type linear are precision parts and need to be treated with outmost cleanliness andcare.

Please unpack the ball screw spindle directly before assembling.

1.1 Installation with spindleThe ball screw spindle needs to be installed radial and stressfree: While tightening the bea-rings, you need to move the slide to and fro on the corresponding side.

1.2 Lubricating notesGeneral notesPlease consider the used lubricant as another machine element. Beside the careful design ofthe ball-type linear drives the lubricant is mainly required to achieve the technically possible ser-vice life.

For most applications, the lubricant is a wearing part and needs to be added accordingly.

As a matter of principle, a ball-type linear drive cannot be perfectly sealed, since there arealways parts of the running path which back out of the protected area. This way, dust and othersoilings of the environment are taken up which adhere to the greasy surfaces and provide foradditional lubricant consumption. A part of the soilings get into the nut and make the lubricantthicken. Thus, the serviceability of the lubricant is decreasing which needs to be compensatedby the lubricating.

Before commissioning the spindle imperatively lubricate the whole length of the threadwith thehelp of the nut.

Due to the axial movements between the nut and the spindle the loss of lubricant is higher thanfor rolling bearings. Therefore, it is not possible to perform a lifetime lubrication.

Lubricating

In order to maintain the functional capability of the ball screws, they need to be lubricated suf-ficiently. You may use the same lubricants as for rolling bearings. Lubricants containing MoS2 orgraphite must not be used. The choice of the lubricant and the kind of application can generallybe adapted to the lubrication of the other machine components. According to experience, a sin-gle lifetime lubrication of the ball-type linear drives is not sufficient since the spindle alwaysdischarges small amounts of lubricants off the nut.

Greasing

Use greases with EP additions (KP2K, DIN 51825). The regreasing interval is depending on theenvironmental conditions. Generally, it is necessary to regrease every 200 to 600 operatinghours (about 3 months). It applies as standard value for the regreasing quantity: per each 1 cmspindle diameter 1 cm³ grease per nut. Only use greases of the same saponification basis whenregreasing. If you use any greases of another saponification basis, it is necessary to clean therecirculating ball screw and the spindle nut.

When you have regreased once, you should move the slide completely to and fro in order tomake sure that the grease will be uniformly spread over the ball screw spindle and in the nut.Then you should regrease once again.

5. Dezember 2007Page 2 Recirculating ball screw assembly and maintenance instruction ; Version 2.0

B


Assembly and maintenance instruction recirculating ball screw

© 2

007

GB

1.2.1 Greases

This list is a recommendation without engagement.

1.3 Notes regarding the storageBall-type linear drives are susceptible to damages and soiling. They need to be stored at a dryplace. The spindle needs to be supported in a way that it cannot bend.

Protect the lubricated ball-linear drive from dust and chips.

1.4 Technical data

Lubricant Classification Quality Manufacturer / Type Quan-tity

Multi-purpose grease on mineral

oil basisNLGI 3 K2K according to

DIN 51825

AralMulti-purpose grease HL3

2-3 cm³

FuchsMulti-purpose grease

FWA 220

BPEnergr. LS3

ShellRetinax AAlvania R3

KlüberIsoflex NBU 15

OptimolOptitemp TT1

Recirculating ball screw Pitch Tolerance class Tolerance of deviation about 300 mm

travel

X-axis 4

IT7 52 µmY-axis 4

Z-axis 5



© 2007

G

1.5 Packliste - Packing listNr.No

AchseAxis

BezeichnungDesignation

ArtikelnummerItem No

AbbildungIllustration

Stck.pc.

1 Z - AchseZ - axis

Spindel (458 mm)Spindle (458 mm) 3574302 1

2

Y - AchseY - axis

Spindel (350 mm)Spindle (350 mm)

3574301

1

MontagehülseMounting sleeve 1

3BF 20X - AchseX - axis


3574303 1

4BF 20 LX - AchseX - axis


3574304 1

5 SchraubensatzScrew set

3574305Innensechskantschraube

Hex. socket head screwDIN EN ISO 4762-M6x25

2


3574306Linsenkopfschraube

Lens head screwDIN EN ISO 7045-M6x12

4




3

8SchraubensatzScrew set



2

9SchraubensatzScrew set



1

10 MontagesatzX-, Y-, Z-Achse 3574356 1


B



© 2

007

GB

1.6 Converting to a recirculating ball screw

INFORMATION

When assembling the BF20 and BF20L from trapezoidal threads to recirculating ball screws, it ispossible that the travels of the X-, Y- and Z-axis are changing.

1.6.1 Disassembly X-axis

Start disassembling on the left side of the drilling-milling machine.

Unscrew the hexagon nut from the spindle.

Fig.1-1: Handwheel left

Remove the handwheel, if neces-sary strike with a plastic tip hammer.

Fig.1-2: Handwheel left

For CNC conversion disassemble the step motor as well as the belt pulleys, the housing and the belts (CNC conversion instructions) at the left side of the X-axis.

Fig.1-3: Disassemble step motor or housing

Unscrew hexagonnut X-axis

Disassemblehandwheel X-axis

Housing

Step motor

Belts



© 2007

G

Loosen and unscrew hexagon nut, then disassemble the toothed wheel.

Fig.1-4: Loosen nut

Fig.1-5: Disassemble toothed wheel

Disassemble the two screws on the left side of the X-axis.

Fig.1-6: Disassemble screws

Hexagon nut

Toothed wheel

Pillow block

Screws


B



© 2

007

GB

Drag the feather key from the spindle.

Fig.1-7: Disassemble feather key

Remove pillow block, if necessary strike with a plastic tip hammer.

Fig.1-8: Disassemble pillow block

Disassemble limit stops of the X-axis.

Fig.1-9: Disassemble limit stop

Feather key

Pillow block

Limit stops



© 2007

G

Unscrew the indicator and the two clamping levers of the X-axis.

Fig.1-10: Unscrew indicator and clamping lever

Now disassemble the right side of the X-axis.


Fig.1-11: Handwheel right

Remove the handwheel, if neces-sary strike with a plastic tip hammer.

Fig.1-12: Handwheel right

Disassemble the two screws on the right side of the X-axis.

Fig.1-13: Disassemble screws

Indicator

Clamping lever

Unscrew thehexagon nut from

the X-axis

Disassemble hand-wheel of the X-axis

Covering plate

Screws


B



© 2

007

GB


Fig.1-14: Disassemble feather key

Remove pillow block, if necessary strike with a plastic tip hammer.

Fig.1-15: Disassemble pillow block

Loosen the V-ledge at the locking screw.

Fig.1-16: Loosen V-ledge

Feather key

Pillow block

Locking screw



© 2007

G

Drag the table (X-axis) off-centre.

CAUTION!Risk of crushing when dragging the table. The table is very heavy!If required, support the table from the bottom when disassembling and secure it against falling down.

Fig.1-17: Drag table (X-axis)

Remove locking screw.

Drag V-ledge out of the cross table.

Fig.1-18: Drag V-ledge

Loosen the two hexagon socket screws at the cross table.

Fig.1-19: Disassemble hexagon socket screws

Table (X-axis)

V-ledge

Hexagon socketscrews


B



© 2

007

GB

Remove the spindle with the spindle nut from the cross table.

Fig.1-20: Remove spindle

Turn the cross table to the front in order to facilitate for disassembly of the expansion bellows.

Fig.1-21: Disassemble expansion bellows

Remove the hexagon socket screws and the rubber covering from the expansion bellows.

Fig.1-22: Unscrew rubber covering

Spindle

Spindle nut

Y-axis




© 2007

G

Unscrew the hexagon socket screws from the cross table.

Remove the rubber covering on the cross table.

Fig.1-23: Unscrew rubber covering

1.6.2 Disassembly Y-axis


Remove handwheel, if necessary strike with a plastic tip hammer.

For CNC conversion, disassemble the step motor as well as the belt pulleys, the housing and the belt (CNC conversion instruction) on the Y-axis.


Unscrew the pillow block of the Y-axis.

Fig.1-24: Unscrew pillow block

Rubber covering

Hexagon screw

Handwheel

Feather key

Pillow block


B



© 2

007

GB

Loosen hexagon socket screws.

Remove the two clamping levers on the cross table.

Fig.1-25: Loosen nut

Remove locking screw.

Drag the V-ledge out of the cross table.

Fig.1-26: Remove V-ledge


Clamping lever

Locking screw

V-ledge



© 2007

G

Separate the spindle nut of the Y-axis from the cross table.

Drag the cross table out of the gui-deways.

Fig.1-27: Drag out the cross table

Turn the spindle out of the spindle nut and remove it.

Fig.1-28: Disassembly spindle

Cross table

Spindle nut

Spindle


B



© 2

007

GB

1.6.3 Disassemble Z-axis

Remove hexagon socket screw.

Drag the drill chuck protection from the fixture to the bottom in order to protect it from possible damages.

Fig.1-29: Remove drill chuck protection

Unscrew the two hexagon socket screws from the slide of the Z-axis.

Shift the expansion bellows a little to the bottom.

Fig.1-30: Unscrew expansion bellows

Loosen the locking screw at the drilling-milling head.

Fig.1-31: Unscrew expansion bellows

Hexagon socketscrew

Drill chuckprotection


Expansion bellows

Locking screw



© 2007

G

Remove the hexagon socket screw at the drilling-milling head.

Unscrew the hexagon nut. While doing this, hold the drilling-milling head.

CAUTION!Risk of crushing when disassembling the drilling-milling head. The drilling-milling head weighs about 25 kg!If required, suspend the drilling-milling head when disassembling it or support it and secure it from fal-ling down.

Fig.1-32: Unscrew hexagon socket screw and hexagon nut

Turn the drilling-milling head off cen-tre in order to simplify disassem-bling it.

Draw the drilling milling head out of the slide of the Z-axis.

CAUTION!Risk of crushing when disassem-bling the drilling-milling head. Thedrilling-milling head weighs about 25kg!

Fig.1-33: Disassemble drilling-milling head

Hexagon socketscrew

Hexagon nut

Drilling-milling head


B



© 2

007

GB

Remove the hexagon socket screws as well as the protective covering of the Z-axis.

Fig.1-34: Remove protective covering

Loosen and disassemble the hexagon socket screws.


Loosen and disassemble the hexa-gon socket screws on the Z-axis.

Remove the handwheel with the pil-low block, if necessary strike with a plastic tip hammer.

Fig.1-36: Disassemble handwheel and pillow block

Protective covering




Handwheel



© 2007

G

Loosen and disassemble the hexa-gon socket screws on the pillow block of the Z-axis.

For CNC conversion, disassemble the step motor as well as the belt pulleys, the housing and the belt (CNC conversion instructions) on the Z-axis.


Remove clamping screw.

Draw the V-ledge out of the slide.

Fig.1-38: Remove V-ledge

Remove the two clamping levers at the slide.

Fig.1-39: Remove clamping lever

Hexagon socketscrew

Clamping screw

V-ledge

Clamping lever


B



© 2

007

GB

Drag the slide out of the guideways.

Fig.1-40: Drag out the slide (Z-axis)

Drag the fixture out of the spindle nut.

Fig.1-41: Drag off fixture

Remove the spindle with the pillow block from the Z-axis.

Fig.1-42: Remove spindle

Drag the expansion bellows out of the guideway of the Z-axis.

Fig.1-43: Drag off expansion bellows

Slide Z-axis

Spindle nut

Fixture

Pillow block

Spindle

Expansion bellows



© 2007

G

1.6.4 Cleaning the guideways

Clean all guideways.

Fig.1-44: Cleaning guideways

1.6.5 Assembly Y-axis

Visual inspection of the cross tableCheck if the pocket or the long hole are located in the cross table. If it is not available, you have to mill the pocket or the long hole with the help of the production drawing (part 1).

„Production drawings“ on page 40

Fig.1-45: Visual inspection cross table

GuidewayY-axis

GuidewayZ-axis

Long hole

Pocket

Cross table


B



© 2

007

GB

Shift the pillow block of the Y-axis to the beginning of the recirculating ball screw.

Reassemble the feather key of the Y-axis.

Slide the toothed wheel on the recirculating ball screw.

Screw the toothed wheel of the Y-axis with the locking nut.

Fig.1-46: Assembly pillow block and toothed wheel of the Y-axis

Disassembly of the spindle nut of the Y-axis

Put the spindle on the plastic bushing in order to hold the balls in the disassembled nut.

CAUTION!If you do not apply enough pressureon the bushing, the balls might falloff the nut. Then the nut will becomeunusable!

Slide the spindle nut on the plastic bushing by turning.

CAUTION!Do not force the nut when turning itdown, it might get damaged!

Fig.1-47: Disassemble spindle

Recirculating ballscrew

Pillow block

Feather key

Toothed wheel

Lock nut

Nut

Spindle

Plastic bushing



© 2007

G

Slide the spindle on the Y-axis.

Put the plastic bushing with the spindle nut on the spindle of the Y-axis.

Turn the spindle clockwise on the spindle nut until the plastic bushing is pressed out of the spindle nut.

Fig.1-48: Assembly spindle nut Y-axis

CAUTION!Do not force the spindle when turning it into the nut, it might get damaged!If you do not apply sufficient pressure on the bushing, the balls might fall off the nut.Then the nut will become unusable!

Spindle nut

Spindle Y-axis

Plastic bushing


B



© 2

007

GB

Oil all guideways.

Re-assemble cross table.

Slide the V-ledge on the cross table. Clamp or adjust it using the lock screw.

Fig.1-49: Oil guideways and assemble cross table

Guideways

Cross table

V-ledge

Lock screw



© 2007

G

INFORMATIONFor older versions of the BF 20, the pil-low block of the Y-axis is a little smaller.In this case, you should use the longersupporting bushings (included in theCNC add-on kit part No. 4).

For new versions (from 2007 on) of the BF 20, the pillow block is built stronger. Use the attached small sup-porting bushings (included in the CNC add-on kit part No. 11). If they are not included in the delivery, turn the lar-ger supporting bushings off to 14 mm using a lathe with the help of the pro-duction drawing (part 2). The rear of the housing should be flush with the shaft end of the pillow block as illu-strated.


Put the small or the turned off suppor-ting bushings into the holes of the pil-low blocks.

Mount the housing of the Y-axis using the attached fixing material. Please make sure that you only screw in the hexagon socket screws, but do not tighten them yet.

Fig.1-50: Assembly Y-axis

Pillow blockY-axis(old version)

Supportingbushings

Supportingbushings

Pillow blockY-axis

Rear of the housing

Pillow blockY-axis

Supportingbushings



B



© 2

007

GB

Put the support of the Y-axis on the spindle nut.

Fix the support to the spindle nut using the hexagon socket screws. Apply a securing mean before screwing the hexagon socket screws.

Clamp the fixture. Before clamping the fixture, turn the cross table once completely to the front and to the back. Clamp the support to the front position of the cross table.

When mounting the CNC kit you should no longer use the clamping lever to clamp the table since they might possibly interfere when traveling the axis. Use hexagon sok-ket screws with counternuts instead.

Now fasten the hexagon socket screws on the housing.

Now mount the remaining parts of the CNC add-on kit (CNC conver-sion instructions).

Fig.1-51: Assembly Y-axis

Support Y-axis

Spindle nut

Support Y-axis

Securing mean


Support Y-axis


Housing




© 2007

G

1.6.6 Assembly X-axis

Assemble the support of the X-axis on the spindle nut of the recircula-ting ball screw using the attached fixing material.

Before fixing the screws apply a securing mean.

Put the recirculating ball screw on the cross table.

INFORMATIONIf the support (X-axis) does not fit intothe recess, you need to expand theradiuses on the supports of the X-axis.If necessary, adapt the oversize of thesupport to match the dimension of therecess. Please make sure that the sup-port properly suits the clamping sur-faces.

Fig.1-52: Assemble support

Hexagon socketscrew

Support X-axis

Spindle nut

Support X-axis

Securing mean

Recirculating ballscrew X-axis

Cross table

Support X-axis

Radiuses

Clamping surfaces

Cross table


B



© 2

007

GB

Check if the table is even and free from soiling before assembling the X-axis.

If there are any soilings, remove them.

After machining clean and oil the guideways.

CAUTION!Imperatively remove any soilings,otherwise it may be impossible totravel the X-axis!

Fig.1-53: Checking the X-axis

Example soiling

Table X-axis

Guideways



© 2007

G

Re-assemble the table X-axis.

Slide the V-ledges into the cross table. Clamp or adjust them using the lock screw.

Fig.1-54: Assembly X-axis

Table Y-axis

Cross table

V-ledge

Lock screw


B



© 2

007

GB

Start assembling the pillow blocks at the right side of the milling-drilling table.

Apply a sealing agent.

Assemble the pillow block of the X-axis.

Make sure that the cylinder pins are located in the pillow block.

Fix the pillow block using the hexagon socket screws.

Slide the spacer into the pillow block.

Slide the attached aluminum bus-hings on the spindle of the X-axis. If there are no bushings included in the scope of delivery, you should produce them yourself with the help of the production drawing (part 3).


Assemble a locking nut to the spindle of the X-axis.


Table X-axis

Sealing agent

Pillow block

Hexagon socketscrew

Spacer

Aluminum bushing

Disk

Locking nut



© 2007

G

Then assemble the left pillow block to the X-axis of the drilling-milling machine.

Fix the pillow block using the hexagon socket screws.

Slide the spacer on the X-axis.

Reassemble the feather key of the X-axis.

Slide the toothed wheel on the recir-culating ball screw.

Tighten the toothed wheel of the X-axis with the locking nut.


Table X-axis

Pillow block


Spacer

Feather key

Toothed wheel

Locking nut

Disk


B



© 2

007

GB

Clamp the fixture of the X-axis on the cross table. Before clamping it you should once turn the cross table completely to the right and then to the left (manually turn the spindle). Clamp the fixture in the center position of the table X-axis.

Remove the indicator on the pillow block.

Slide the assembly ring on the pil-low block. Slightly tighten them using the hexagon socket screw.

Now you have to put the housing on the assembly ring.

Firmly tighten the hexagon socket screws in the housing. Before tightening the screws the housing should be horizontally aligned.

Now assemble the remaining parts of the CNC add-on kit (CNC conver-sion instructions).


Clamping screws

Cross table

Indicator scale ring

Assembly ring


Housing X-axis



© 2007

G

Fix the limit stops as well as the indicator of the X-axis using the hexagon socket screws.

When mounting the CNC kit, you should no longer use the clamping levers to clamp the table since they might possibly interfere when traveling the axes. Use hexagon socket screws with counternuts instead.

Fig.1-58: Assembly limit stops or indicator X-axis

Limit stops

Indicator


Indicator


B



© 2

007

GB

1.6.7 Assembly Z-axis

Disassemble the old spindle from the pillow block of the Z-axis. To do so, use a sickle spanner.

Put the pillow block on the recirculating ball screw of the Z-axis.

Slide the attached distance ring on the recirculating ball screw. If it is not included in the delivery, produce a distance ring yourself with the help of the production drawing (part 4). Use brass to manufacture the distance ring.


Apply a securing mean on the thread of the recirculating ball screw.

Turn the toothed wheel on the spindle to the limit stop.

Firmly tighten the toothed wheel using an appropriate spanner.

Fig.1-59: Assembly recirculating ball screw Z-axis

Spindle

Pillow block Z-axis

Ball screw spindleZ-axis

Distance ring

Securing mean

Toothed wheelZ-axis



© 2007

G

Disassembly of the support (part 2) from the support (part 1) of the Z-axis.

Slide the support (part 2) as illustrated onto the spindle of the Z-axis.

Before fastening the hexagon socket screws apply a securing mean.

Slide the expansion bellows on the guideway of the Z-axis.

Fig.1-60: Assembly recirculating ball screw Z-axis

Support (part 1) Z-axis


Pillow block Z-axis

Recirculating ballscrew Z-axis


Securing mean

Recirculating ballscrew Z-axis

Hexagon socketscrew

Expansion bellows


B



© 2

007

GB

Re-assemble the slide of the Z-axis.

Shift the V-ledge on the slide of the Z-axis. Clamp or adjust it using the lock screw.

Fig.1-61: Assembly Z-axis

Slide Z-axis

Z-axis

V-ledge

Lock screw



© 2007

G

Insert the spindle into the Z-axis.

Mount the support (part 1) on the support (part 2).

Fix it using the lock screw. Make sure that the support is correctly positioned.


Spindle Z-axis

Z-axis

Support

Lock screw


B



© 2

007

GB

Position the slide above the sup-port. Fix the slide of the Z-axis using the two hexagon sokket screws.

If required, adjust the distance of the spindle and of the spindle nut using the locking screws and in doing so adjust the smooth running of the spindle.

Fix the pillow block of the Z-axis once again.

When assembling the CNC kit, you should no longer use the clamping levers for the table clamping, since they possibly might interfere when traveling the axis. Use hexagon sok-ket screws with counternuts instead.


Slide Z-axis

Support


Locking screw

Hexagon socketscrew




© 2007

G

Assemble the housing of the Z-axis using the fixing material.

Mount the attached covering of the Z-axis using hexagon socket screws.

Fix or clamp the drilling-milling head using the hexagon socket screw and the hexagon nut.

CAUTION!Risk of crushing when assemblingthe milling head. The drilling-millinghead is weighing about 25 kg!

Fig.1-64: Assembly drilling-milling head


Housing Z-axis

Covering Z-axis


Hexagon socketscrew

Hexagon nut


B



© 2

007

GB

Align the drilling-milling head before fixing it to the limit stop of the Z-axis.

Secure the drilling-milling head using the lock screw.

Position and fix the drill chuck protection above the support.

Now assemble the remaining parts of the CNC add-on kit (CNC conver-sion instructions).

Fig.1-65: Assembly drilling-milling head

Limit stop Z-axis


Lock screw

Drill chuckprotection



© 2007

G

1.7 Production drawings


B


Appendix

© 2

007

GB

2 Appendix

2.1 Copyright© 2007

The documentation is copyright. All derived rights are also reserved, especially those of transla-tion, re-printing, use of figures, broadcast, reproduction by photo-mechanical or similar meansand recording in data processing systems, neither partial nor total.

The company reserves the right to make technical alternations without prior notice.

2.2 WarrantyWithin the term of warranty, the company Optimum warrants for a perfect quality of its productsand will reimburse any cost for overhaul or exchange of defective parts in case of constructionerror, fault in material and/or defect of fabrication.

The term of warranty for commercial use is 12 months and for the use as an amateur it is 24months. Condition for a warranty claim due to construction errors, faults in material and/ordefects of fabrication is:

Proof of purchase and that the instructions for use had been followed.In order to assert the claim of warranty, you have to present a typescript original receipt of purchase. It must comprise the complete address, date of purchase and type designation of the product.The instruction for use of the corresponding device as well as the safety information are to be observed. Damage due to operator’s mistakes may not be accepted as warranty claims.Correct use of the devices.The products of the company Optimum had been designed and built for certain purposes They are listed in the operating manual.The warranty claim may not be accepted if the operating manual is not being followed pro-perly or if it is used for a purpose which has not been intended or with improper accessory.Maintenance work and cleaning.It is absolutely necessary to maintain and clean the machine in regular intervals according to the prescriptions of the instruction for use.By intervention of a third party, any warranty claim will expire. Maintenance work and cleaning are usually not part of the claim of warranty.Original spare partsMake sure to use only original spare parts and original accessory. This can be acquired from authorized distributors of the machine. When other than original parts are being used, conse-quential damages may occur and danger of accidents will increase. Disassembled or partially disassembled devices and devices which are repaired with foreign parts are excluded from warranty claims.Wearing partsCertain components are subject to wear out by time respectively a standard wear by use on the corresponding machine.Among these components are e.g. V-belts, ball bearings, switches, main cables, gaskets and washers, etc. These wearing parts are not part of the warranty.


AppendixOPTIMUMM A S C H I N E N - G E R M A N Y

© 2007

G

2.3 Product follow-upWe are required to perform a follow-up service for our products which extends beyond shipment.

We would be grateful if you could send us the following information:

Modified settingsExperiences with the recirculating ball screw, which could be important for other usersRecurring failures.

Optimum Maschinen Germany GmbHDr.-Robert-Pfleger-Str. 26

D-96103 Hallstadt

Fax +49 (0) 951 - 96 822 - 22E-Mail: [email protected]


B

Documents

Assembly and maintenance instruction - Sparks Shopsparks-shop.eu/images/stories/manual/bf20ballscrew.pdfWhen assembling the BF20 and BF20L from trapezoidal threads to recirculating