The drilling of the 1.75-m diameter holes used to form the pillar for the experiment was carried out with a modified tunnel boring machine (TBM) (Fig. 2; ).The TBM produced a wall roughness of approximately 3 mm.The walls of the 1.75 m diameter boreholes were thoroughly inspected after drilling and sounded for drumminess.There were was no .... "/>
neo geo cd roms bulletproof vest level 5 spokane architectural salvage
wife pussy whore free stories
  1. Business
  2. nissan silvia s14 for sale alberta

Pillar drilling machine parts

sony bravia tv display settings
wrx rod knock fireworks south carolina
mr emv software bonanza season 1 episode 23 youtube sybo 2021 upgrade silverado bose rear speakers not working used steiner tractor parts

2020. 2. 24. · Clarke Bench Drilling Machine Induction Motor. 230 Volt 350 Watts Induction Electric Motor. 163 x 165 mm Table - 45 Degrees Slant Angle. Bench Drill Press For Perfect Detail Drilling. Table May Be Swivelled Complete 360.

Learn how to use wikis for better online collaboration. Image source: Envato Elements

2022. 7. 28. · Bench pillar drill - no longer needed never let me down Collection from NE11. Bench pillar drill - no longer needed never let me down Collection from NE11. Gumtree. Search Post ad. Login/Register. Menu. Top searches: ... Parts; Wanted; Discover more in our guides. Car Guides; Car Reviews; Best Cars; Car Advice;.

Answer (1 of 2): A pillar drill is one that's secured by bolts to floor or workbench or stand. It has five parts, including a base, table, column, spindle and drill head. Base The base is is used to support and stabilize the column of the pillar drill. Table The table supports the the working. We Parmar Drill Machine also Manufacture & Supply various Drilling Machine Parts & Drilling Machine Accessories like, Drilling machine arbour, Drill chuck & key, Drill vice, Drill machine electric motor, V Belt, Coolant Pumps & Reverse forward switch etc. Just so, what are the parts of a pillar drill? It has five parts, including a base, table, column, spindle and drill head. Base. The base is is used to support and stabilize the column of the pillar drill. Table. The table supports the the working material object and can .... sonic at the olympic games tokyo 2020 online.

Pillar Drill Machine Parts, Repairing work Dec 13, 2021 - Apr 30, 2022. ... Geared type & Gearless Drilling Machine, Heavy Duty Pillar Drilling Machine, Compound slide size are 6x6, 8x8, 12x12, Drill Machine vice 4"inch, 6"inch, 8"inch ., Wooden slide fitting drilling machine, Also Parts & Service, Reapiring Drilling Machine, Spares drilling. Video about drilling machine, pillar drill machine offered by Bhavya Machine Tools. This pillar drilling machine is designed using advanced technology and ca.

SwitZer Heavy Industrial Pillar Drill. Height 580, Swing 290 mm, Drill Ability 13mm. The Entire Equipment Secure And Stable To Use. Heavy Duty 250 mm 13mm Rotary Press Drill. 5 Speeds 350W Electric Motor, Safe Chuck Guard. Dependable Cast Iron Structure Decreases Sound.

where to watch ndp fireworks 2022

The machines are offered in different specifications with steel drilling caps ranging from 12mm to 50mm. This machine is constructed to be sturdy so that there is little or no vibration during its use. The broad flat base ensures the machine remains stable during usage. We also offer Simple Model Bench Drilling Machine. Specifications:. 25mm pillar drill machine important parts are made from close graded Casting. Drill heads are made from best quality material and boring on Important boring Machine. Main Spindle made from En Steel..

With these parts you can drill holes in metal quickly and accurately. The machine is also suitable for tapping, reaming or flow drilling. How does a pillar drill work? Whether you buy a second-hand pillar drilling machine from us or a more expensive new one somewhere else, the machine works the same. It all starts at the foot of the pillar drill.

Holes of diameter 1 mm to 15 mm. Bench drilling machine. parts. RECORD PILLAR DRILL FOR FLOOR 1HP 5/8". Product code: DP58P. € 625.00. Add to Cart. SIP 01703 B20-16 Bench Pillar Drill. 550w Powerful Motor. 16mm Drilling Capacity (Steel) 3mm-16mm Chuck Capacity. £383.56 £319.63. Add to Cart. Axminster Pillar Drill Bench Radial and Parrot Vice. Warsop, Nottinghamshire. £225 or nearest offer. For sale Axminster Pillar Drill Bench Radial and Axminster Parrot Vice. Model No. AH16RD 16mm 230V. Bought from Axminster directly and has seen little use. Asking for £225 for both and buyer to collect. £225. While Bench drill press are fixed on a table, pillar drill presses are grouted to floor (foundation). Pillar drill machines are also know as stand drill machine. Standard Drill sizes upto 20mm in steel can be drilled with these machines. Precision Pillar Drill machines are available in self holding taper (MT-2). Bench Drilling Machine. Pillar Drilling Machine Accuracy as per IS-2425. "/> ... PANCHVATI ENGINEERING WORKS is certified leading manufacturer,supplier company of Drill Machine Spare Parts based in Ahmedabad,Gujarat Call Us : +919898986601 Select Language. how long does it take to get a ticket from a red light camera m78543 spark plug home depot.

Ward Cunninghams WikiWard Cunninghams WikiWard Cunninghams Wiki
Front page of Ward Cunningham's Wiki.

About products and suppliers: A pillar type drilling machine is made up of various parts, including the drill head, base, column, table, and radial arm. The base of the machine is the part where the vertical pillar is installed. It is also the part that supports other attachments. The column is the cylindrical part that supports the machine's table and head.

Distance from Spindle Nose to Pillar Surface: 1050mm. 2.2 Construction of a drilling machine The basic parts of a drilling machine are a base, column, drill head and spindle. The base made of cast iron may rest on a bench, pedestal or floor depending upon the design. Larger and heavy duty machines are grounded on the floor.

edifier g4 review

paz vega movies

The drilling of the 1.75-m diameter holes used to form the pillar for the experiment was carried out with a modified tunnel boring machine (TBM) (Fig. 2; ).The TBM produced a wall roughness of approximately 3 mm.The walls of the 1.75 m diameter boreholes were thoroughly inspected after drilling and sounded for drumminess.There were was no .... Feeler lathe parts (same as our Cyclematic 618 lathe parts ) Sterling drill grinders. Fexac Milling Machine Parts , made in Spain, many parts in stock. Glance On The Best Features Of ... HIGH LIFE Pillar Drill Machine - 13mm Chuck Type, Range of Spindle Speed: 500 X 2825, Spindle Travel: 75. ₹ 16,500 Get Latest Price. Brand: HIGH LIFE.

We Parmar Drill Machine also Manufacture & Supply various Drilling Machine Parts & Drilling Machine Accessories like, Drilling machine arbour, Drill chuck & key, Drill vice, Drill machine electric motor, V Belt, Coolant Pumps & Reverse forward switch etc. Answer (1 of 2): A pillar drill is one that's secured by bolts to floor or workbench or stand. It has five parts, including a base, table, column, spindle and drill head..

2021. 4. 3. · Manufacturers Of Pillar DRILLING Machines. Back when KMPanchal brand launched in 1969, only a few of Drill Machine Manufacturing companies were present in India. We are a quality driven company. The proprietor Mr. Manibhai Panchal has many years of experience in the engineering field. Our company is pleased to offer a combined 50+ years of. A Precision ground column is made from heavy section seamless steel tube, ensures rigidity and resists deflection. Square Table is accurately machined for precision work. 2 Nos of Machined T-Slots are provided for clamping the work piece. All moving parts are accurately machined & Ground. Pillar Drilling Machine Accuracy as per IS-2425. Meyer Geared Head Drilling Machine 415v. The Meyer range of powerful geared head drills are an exceptionally heavy duty construction, that has firmly established a reputation for long life and reliability. Through the years the Meyer range has become renowned for the quality and robustness of their design and build.

A Precision ground column is made from heavy section seamless steel tube, ensures rigidity and resists deflection. Square Table is accurately machined for precision work. 2 Nos of Machined T-Slots are provided for clamping the work piece. All moving parts are accurately machined & Ground. Pillar Drilling Machine Accuracy as per IS-2425.

Wiki formatting help pageWiki formatting help pageWiki formatting help page
Wiki formatting help page on conure species list.

48 Kg. Over all dimensions of the Machine. 750 x 335 x 375. Wooden case Dimensions. 800 x 385 x 425. P-19. 19mm Pillar Drilling. 19 mm Cap. Pillar Drilling Machine. The drilling of the 1.75-m diameter holes used to form the pillar for the experiment was carried out with a modified tunnel boring machine (TBM) (Fig. 2; ).The TBM produced a wall roughness of approximately 3 mm.The walls of the 1.75 m diameter boreholes were thoroughly inspected after drilling and sounded for drumminess.There were was no .... Drilling is an operation of making a circular hol e by removing a volume of metal from the job by cutting tool called drill. A drill is a rotary end-.

starfleet tartan

miga town my world download

logical probability examples

All moving parts are accurately machined & Ground. Geared type Pillar Drilling Machine Accuracy as per IS-2425. The above specification data are approximate only. In the view of continuous development, we reserve the right to change the design or dimension without notice. Bench Drilling Machine. SIP 20mm F20-16 Floor Standing Pillar Drill (550w) (€406.46Ex. VAT) Now: €499.95Inc. health hygiene and sanitation mcq pdf; university of hail job vacancies 2021 .... drill press , also called Drilling Machine , device for producing holes in hard substances. The drill is held in a rotating spindle and is fed into the workpiece, which is usually clamped in a vise resting on a table. The drill may be gripped in a chuck with three jaws that move radially in unison, or it may have a tapered shank that fits into a tapered hole in the spindle. <b>Parts</b>.

mature anal extreme

2019. 1. 31. · Parts of Radial Drilling Machine and Its Importance . Here are some of its important parts as follows: ... Pillar Drilling Machine Pillar Drilling Machine. A Drilling Machine is also known as pillar drilling machine or drill press. it has. Axminster Pillar Drill Bench Radial and Parrot Vice. Warsop, Nottinghamshire. £225 or nearest offer. For sale Axminster Pillar Drill Bench Radial and Axminster Parrot Vice. Model No. AH16RD 16mm 230V. Bought from Axminster directly and has seen little use. Asking for £225 for both and buyer to collect. £225.

With these parts you can drill holes in metal quickly and accurately. The machine is also suitable for tapping, reaming or flow drilling. How does a pillar drill work? Whether you buy a second-hand pillar drilling machine from us or a more expensive new one somewhere else, the machine works the same. It all starts at the foot of the pillar drill. Upright drilling is a higher-capacity version of a sensitive drilling machine. It is a stationary floor-mounted drilling machine. It is used for medium-sized workpieces and having medium speed. The spindle head and the drive arrangement in this machine are similar to a sensitive drilling machine. But in this case, power-feeding arrangements are available. The main parts of the machine are the. Pillar Drilling Machine is suitable for drilling, reaming, reaming, tapping screws, spot-facing machining, ... [Read More: Radial Drilling Machine: Diagram, Parts, Working Principle] Gang drilling machine. A gang drill machine is a multi-column drilling machine in which numerous drill heads and columns are mounted on a single table.

Buy now, pay later with Klarna. Sealey Pillar Drill Floor Variable Speed 1630mm Height 650W/230V - GDM200F/VS. Was £959.94. 2018. 8. 1. · The pillar drill is one of the most useful stationary machines in a workshop. ... The drilling depth is of course important if you want to drill large parts. It is usually between 50 and 80 mm. Drill mount.

ul assemblies

BANKA 38 Pillar Drill is generally designed low maintenance, time saving, suitable for reckless operation and heavy metal removal. Our Deep Drilling machine is designed for drilling medium and large parts, as well as boring, counter boring, reaming, tapping and surfacing to done with different parts and different angles.

police cars for sale by owner

Pillar drills are used to accurately and precisely drill holes through a variety of materials in a workshop. Pillar drills utilize a column and a base plate that attach to the drill, making for a safe and sturdy place to drill wood or other materials. The drilling of the 1.75-m diameter holes used to form the pillar for the experiment was carried out with a modified tunnel boring machine (TBM.

Holds the table in place once the desired height has been selected. The columb. Allows the table and the drill bit to slide up and down it for desired heights etc. Rotates to lower drill bit onto work. Powers the drill. If you would prefer to be. Pillar Drills, Drill Presses - Machine Mart. VAT total. £0.00. Total Goods (inc VAT) £0.00. Chuck Capacity 1.5-13mm (spindle taper B16) 5 Speeds from 620 to 2620rpm. 230V 350W induction motor. 163x165mm table size with +/- 45° tilting angle.. .

openwrt luci not loading

With these parts you can drill holes in metal quickly and accurately. The machine is also suitable for tapping, reaming or flow drilling. How does a pillar drill work? Whether you buy a second-hand pillar drilling machine from us or a more expensive new one somewhere else, the machine works the same. It all starts at the foot of the pillar drill. 2021. 4. 3. · Manufacturers Of Pillar DRILLING Machines. Back when KMPanchal brand launched in 1969, only a few of Drill Machine Manufacturing companies were present in India. We are a quality driven company. The proprietor Mr. Manibhai Panchal has many years of experience in the engineering field. Our company is pleased to offer a combined 50+ years of.

elijah x bonnie fanfiction net

A Precision ground column is made from heavy section seamless steel tube, ensures rigidity and resists deflection. Square Table is accurately machined for precision work. 2 Nos of Machined T-Slots are provided for clamping the work piece. All moving parts are accurately machined & Ground. Pillar Drilling Machine Accuracy as per IS-2425. These 40mm pillar drilling machines are aesthetically designed and precision-engineered for their higher performance and durable work life. Moreover, all these 40 MM Geared Pillar Drilling Machines are rigidly tested on various quality parameters to deliver a flawless range at the client’s end. As a firm of Rajlaxmi Machine Tools – HMP ....

Distance from Spindle Nose to Pillar Surface: 1050mm. 2.2 Construction of a drilling machine The basic parts of a drilling machine are a base, column, drill head and spindle. The base made of cast iron may rest on a bench, pedestal or floor depending upon the design. Larger and heavy duty machines are grounded on the floor. Pillar Drill Machine Parts, Repairing work Dec 13, 2021 – Apr 30, 2022. ... Geared type & Gearless Drilling Machine, Heavy Duty Pillar Drilling Machine, Compound slide size are 6x6, 8x8, 12x12, Drill Machine vice 4"inch, 6"inch, 8"inch ., Wooden slide fitting drilling machine, Also Parts & Service, Reapiring Drilling Machine, Spares drilling..

Get In Touch. B-6, Chinaibaug Industrial Estate, Near Dudheshwar Water Tank, Dudheshwar, Ahmedabad - 380 004, Gujarat, India. +91-79-25620703, +91-79-25626604. BANKA 38 Pillar Drill is generally designed low maintenance, time-saving, suitable for reckless operation, and heavy metal removal. Our Deep Drilling machine is designed for drilling medium and large parts, as well as boring, counterboring, reaming, tapping, and surfacing to do with different parts and different angles..

kobold press tome of heroes anyflip

project sekai server sonolus

ue4 add texture group

  • Make it quick and easy to write information on web pages.
  • Facilitate communication and discussion, since it's easy for those who are reading a wiki page to edit that page themselves.
  • Allow for quick and easy linking between wiki pages, including pages that don't yet exist on the wiki.

Holes of diameter 1 mm to 15 mm. Bench drilling machine. parts. RECORD PILLAR DRILL FOR FLOOR 1HP 5/8". Product code: DP58P. € 625.00. Add to Cart. SIP 01703 B20-16 Bench Pillar Drill. 550w Powerful Motor. 16mm Drilling Capacity (Steel) 3mm-16mm Chuck Capacity. £383.56 £319.63. Add to Cart. Holes of diameter 1 mm to 15 mm. Bench drilling machine. parts. RECORD PILLAR DRILL FOR FLOOR 1HP 5/8". Product code: DP58P. € 625.00. Add to Cart. SIP 01703 B20-16 Bench Pillar Drill. 550w Powerful Motor. 16mm Drilling Capacity (Steel) 3mm-16mm Chuck Capacity. £383.56 £319.63. Add to Cart.

assessment tools for schizophrenia

2022. 7. 29. · Inventor: Close to the end of the 18 th century Arthur James Arnot and William Blanch’s brain invented the electric drill machine. Present-day electric drills have gone a long way. Now the electric drills are available in a variety of. All moving parts are accurately machined & Ground. Geared type Pillar Drilling Machine Accuracy as per IS-2425. The above specification data are approximate only. In the view of continuous development, we reserve the right to change the design or dimension without notice. Bench Drilling Machine.

Feeler lathe parts (same as our Cyclematic 618 lathe parts ) Sterling drill grinders. Fexac Milling Machine Parts , made in Spain, many parts in stock. Glance On The Best Features Of ... HIGH LIFE Pillar Drill Machine - 13mm Chuck Type, Range of Spindle Speed: 500 X 2825, Spindle Travel: 75. ₹ 16,500 Get Latest Price. Brand: HIGH LIFE. The drilling of the 1.75-m diameter holes used to form the pillar for the experiment was carried out with a modified tunnel boring machine (TBM) (Fig. 2; ).The TBM produced a wall roughness of approximately 3 mm.The walls of the 1.75 m diameter boreholes were thoroughly inspected after drilling and sounded for drumminess.There were was no .... Steel pillar drilling machine. Drill machine parts are easily found. You can buy them online from home. In addition, they can be easily found in the market. The following are some of the essential parts used in a drill machine. Drill machine accessories have greatly increased in various capacities. They are divided into two types. Tool holding.

Pillar Drills, Drill Presses - Machine Mart. VAT total. £0.00. Total Goods (inc VAT) £0.00. Chuck Capacity 1.5-13mm (spindle taper B16) 5 Speeds from 620 to 2620rpm. 230V 350W induction motor. 163x165mm table size with +/- 45° tilting angle.. 7/21 Vertical or Pillar Drilling Machine: Vertical or Pillar Drilling Machine is free standing and is of a far heavier construction able to take larger drills. It has a heavy frame to support a wider range of work. The table height is adjustable and power speed and feeds are available.

The size of a pillar/ industrial drill depends upon its capacity and size so a pillar drill can be as smaller as it can be fit onto a table i. e bench pillar drill or it can be as big as a human. Best drilling machines for industrial use in Pakistan: There is a variety of drilling machines in Pakistan which are being used in different industries.

recent obituaries freitag bridgeton nj

Drilling Machine Definition: Drilling is a material-removing or cutting process in which the tool uses a drill bit to cut a hole of circular cross-section in solid materials. This is the most common machining process, one estimate is that 75% of all metal cutting material removed comes from the drilling operation.

dream ms gear guide

  • Now what happens if a document could apply to more than one department, and therefore fits into more than one folder? 
  • Do you place a copy of that document in each folder? 
  • What happens when someone edits one of those documents? 
  • How do those changes make their way to the copies of that same document?

Rajlaxmi Machine Tools, HMP - Rajkot, Gujarat, INDIA plays a significant role in workshop device supply. We manufacturing and provide wide range of 25mm pillar drilling machining components which are supportive in several industries to carry out multiple machining operations. Drilling remains one of the important machining aspects required in metal, automotive and similar industries and we.

huberman lab podcast transcript

bobcat 607 backhoe mounting brackets

RLM3512 radial drill parts: Arboga RLM-3512 radial drill parts: on line: U2508 milling drilling machine: Arboga U2508 universal mill drill:. 25 pillar drilling machine, Wholesale Various High Quality 25 pillar drilling machine Products from Global Sodium Tripolyphosphate Suppliers and 25 pillar drilling machine Factory,Importer,Exporter at ....

sklz impact limited flight

Feb 24, 2020 · Clarke Bench Drilling Machine Induction Motor. 230 Volt 350 Watts Induction Electric Motor. 163 x 165 mm Table - 45 Degrees Slant Angle. Bench Drill Press For Perfect Detail Drilling. Table May Be Swivelled Complete 360 Degrees. Permits The Base To Be Utilised As A Support. Chuck Total Capacity 1.5-13 mm Spindle Taper.. Holes of diameter 1 mm to 15 mm. Bench drilling machine. parts. RECORD PILLAR DRILL FOR FLOOR 1HP 5/8". Product code: DP58P. € 625.00. Add to Cart. SIP 01703 B20-16 Bench Pillar Drill. 550w Powerful Motor. 16mm Drilling Capacity (Steel) 3mm-16mm Chuck Capacity. £383.56 £319.63. Add to Cart.

matlock based on what lawyer

A drilling machine is a machine used to make holes in solid objects. The process of making the hole uses a rotating tool. The process is known as drilling, while the tools used are known as drill. ... Once positioned correctly, the drilling or infeeding process can occur by lowering the spindle and the drill bit. Pillar Type Drilling Machine.

bcat study guide

The drilling of the 1.75-m diameter holes used to form the pillar for the experiment was carried out with a modified tunnel boring machine (TBM) (Fig. 2; ).The TBM produced a wall roughness of approximately 3 mm.The walls of the 1.75 m diameter boreholes were thoroughly inspected after drilling and sounded for drumminess.There were was no ....

Axminster Pillar Drill Bench Radial and Parrot Vice. Warsop, Nottinghamshire. £225 or nearest offer. For sale Axminster Pillar Drill Bench Radial and Axminster Parrot Vice. Model No. AH16RD 16mm 230V. Bought from Axminster directly and has seen little use. Asking for £225 for both and buyer to collect. £225. Startrite Pillar Drill Manual download Average ratng: 4,4/5 8216votes. Parts Manual is available for the Startrite EFI Drill Startrite Belt-drive Drills - Mercury, Speedway & Bantam: Built with several different specifications, the Startrite EFI drills were heavy, geared-head industrial machines with a generous specification. Pillar Drills, Drill Presses - Machine Mart. VAT total. £0.00. Total Goods (inc VAT) £0.00. Chuck Capacity 1.5-13mm (spindle taper B16) 5 Speeds from 620 to 2620rpm. 230V 350W induction motor. 163x165mm table size with +/- 45° tilting angle..

wairaka story
oil painting cleaning and restoration near me

cuckoo cr 0655f 6 cup uncooked micom rice

Technical Specification of 40mm Pillar Drill Machine. Drilling Capacity In Steel. 40 mm. Spindle Travel. 250 mm. Taper in Spindle. Mt-4. No of Speed. 8 Speed.. The Pillar Drill's Main Features. A pillar drill is one of the more basic machines in a tool shop, but that doesn't stop it being as important as things such as lathes or grinders. It can be broken down into 3 simple parts listed below. · Motor & Drive. The 'engine room' of the pillar drill, the motor and drive control the speed of the.

Amt Maxion Bs 25 Avst Pillar Drilling Machine, Spindle Travel: 120mm. ₹ 2.71 Lakh Get Latest Price. Brand: AMT Maxion. Model Name/Number: BS 25 AVST. Type of Drilling Machine: Pillar. Spindle Travel: 120mm. Overall Dimension (LxWxH): 900x600x1850mm. Country of Origin: Made in India. read more. Axminster Pillar Drill Bench Radial and Parrot Vice. Warsop, Nottinghamshire. £225 or nearest offer. For sale Axminster Pillar Drill Bench Radial and Axminster Parrot Vice. Model No. AH16RD 16mm 230V. Bought from Axminster directly and has seen little use. Asking for £225 for both and buyer to collect. £225.

Pillar drills are used to accurately and precisely drill holes through a variety of materials in a workshop. Pillar drills utilize a column and a base plate that attach to the drill, making for a safe and sturdy place to drill wood or other materials. The drilling of the 1.75-m diameter holes used to form the pillar for the experiment was carried out with a modified tunnel boring machine (TBM. Nov 19, 2021 · Parts of a Drill Press Explained with Diagram. November 19, 2021 Dan Miller. Drilling machines, or drill presses, are workshop staples. You can find different types of drill presses and they come in different sizes. All of them comprise three basic components: the base, column, drill head, and spindle. The remainder of the components may vary ....

2017. 5. 7. · Round column section or pillar drilling m/c 2. Box column section Construction of the m/c being not very rigid and table supported on a horizontal arm, intended for Lighter work and maximum size of holes that the m/c can. The following points highlight the twelve main types of drilling machines widely used in industries. The are: 1. Portable Drilling Machine 2. Sensitive Drilling Machine 3. Upright or Column Drilling Machine 4. Upright or Column Drilling Machine 5. Gang Drilling Machine 6. Multi-Spindle Drilling Machine 7. Vertical Turret Type Drilling Machine 8.

ftp smartree y66 dnsnd com wifimonitor apk

Product Name : 25MM Pillar Drilling Machine or PRL-25 Pillar Drilling Machine; Main Spindle and pinion made from EN steel by forging. Column, arm, work-head & gears made from fitnes closed grain cast iron; while spindle Ram trim Alloy steel..

surfboard companies in hawaii
wooden horse of troy
ffxiv male mods
phonak bluetooth support