Lathe Tooling

▸Tool Mounting on Turrets

VDI (DIN 69880 / ISO 10889)

• Name VDI (cylindrical-shank tool holders)
• Standard ISO 10889-1 specifies interchangeability dimensions of cylindrical shanks and mounting bores, dimensions related to data carriers, and delivery conditions, and is described as being for machine tools with non-rotating tools (mainly lathes). Turret makers' documents call the tool mounting seat "DIN 69880"^[1][2]1 source · referenceThat ISO 10889 and DIN 69880 belong to the same family could not be confirmed directly from public primary sources (they are listed together only on dealers' product pages). ISO 10889-1:2004 was confirmed in 2020 and is current
• Clamping The shank has serrations (teeth) and is clamped by meshing with a toothed mating part inside the turret. Both peripheral and face mounting types exist^[3][4]
• Centering A characteristic drawback (compared with BMT) is that the holder must be measured and aligned for straightness when mounted^[4]1 source · reference
• Shank diameter
  • Item
    • 16^[2]1 source · reference
    • 20^[2]1 source · reference
    • 25^[5]1 source · referenceListed as the matching item for the DMG MORI CTX alpha VDI25 Trifix
    • 30^[2][5][6]
    • 40^[2][5][6]
    • 50^[5]1 source · referenceListed as the matching item for the Hurco TMM 12i (VDI50) and Sauter's VDI50 peripheral-mount turrets
    • 60^[5]1 source · referenceListed as the matching item for Duplomatic and the EMCO Maxxturn 200
    • —Not confirmed in public sourcesNo VDI80 entry could be confirmed in public primary sources
  The VDI number = shank diameter (mm). The sources that could be confirmed are recorded for each size
• Driven tool coupling The drive for rotary tools uses standards that differ by machine, such as DIN 1809, DIN 5480 and DIN 5482 (separate from the VDI shank)^[5][6][2]
• Adoption by machine
  • CTX alpha VDI25/VDI30, CTX beta VDI30/VDI40, CLX 450/550 VDI40, NLX 1500-2500 Y/SY VDI40, etc.^[5]
  • LB/LU 2000M = VDI30, LB/LU 3000M and 4000M = VDI40^[5]
  • TMM 8i = VDI30, TMM 10i = VDI40, TMM 12i = VDI50 (all DIN1809)^[5]
  • Hyperturn 645/665 and Maxxturn 65 = VDI40, Maxxturn 200 = VDI60^[5]
  • B500 and G420 = VDI40^[5]

BMT

• Name BMT (Base Mounted Turret)
• Mounting The holder is fixed to the turret face with four bolts and located by a key on the turret face. Said to be more rigid than VDI and needs no straightness alignment^[4][7]
• Standardization Standard numbers such as ISO or DIN could not be confirmed from public sources. Tool makers prepare matching holders for each machine maker and model^[8][5]1 source · referenceSandvik explains it as a "bolt pattern specific to each machine brand". Eppinger, on the other hand, writes on its own site that "BMT was developed by Eppinger and became the world standard", so sources disagree on its standing as a standard. See README-2.md
• Sizes confirmed BMT40、BMT45、BMT55、BMT60、BMT65^[5][6]1 source · referenceBMT45 and BMT65 are listed by both WTO and Sauter (these two are equivalent to high). BMT40, 55 and 60 appear only in WTO's list of matching machines. BMT75 and BMT85 could not be confirmed in public primary sources
• Adoption by machine
  • NTX 2000-3000 2nd Generation = BMT40 or BMT60^[5]
  • Puma 2100 series = BMT55 or BMT65, Puma 3100 = BMT65, Puma MX1600 ST and TT1300 = BMT45, Puma TT2100 = BMT55^[5]
  • VL 2 and VT 2 = BMT55, VL 6 and VT 4-4 = BMT65^[5]
  • Hyperturn 45 = BMT45, Hyperturn 65 = BMT55, Hyperturn 95/110 and Maxxturn 110 = BMT65^[5]
  • GS 200, 250 MSY = BMT65 (some specifications are not BMT)^[5]
  • TMX8 and TMX10 MY/MYS = BMT65 (some specifications are DIN1809)^[5]
  • HD2600/3100M = BMT65, SKT160/180TT = BMT55^[5]
  • Some specifications of QT-Ez 8/10/12 = BMT55^[5]
  • TC 300, TC 600 and Microturn = BMT45^[5]
  • XT-8MY = BMT55^[5]
  • Publishes tooling catalogs for BMT45 and BMT65^[6]

Bolt-on

• Name Bolt-on (square tools and boring bars clamped directly to the turret)
• Example Okuma MULTUS U lower turret (V12 turret): OD turning tool □25 mm, boring bar ø40 mm^[9]1 source · reference
• Comb type —Not confirmed in public sourcesNo public primary source was found that explains tool mounting standards or dimensions for comb-type (gang) tool posts (specific to each machine model)

▸Square Shank

Name

Shank cross-sections of square-shank turning tools (OD holders)

Size

□8、□10、□12、□16、□20、□25、□32^[10]1 source · referenceRange from Mitsubishi Materials' designation table (the symbol is the shank height and width in mm; 08 is 8 mm). □25 is also confirmed in Okuma's catalog (OD turning tool 25×25). Kyocera states that shank height and width are shown as numbers in mm (T2-016). Handling of □40 and above could not be confirmed

▸External Tool Holder Designation (ISO 5608)

Standard

ISO 5608:2012 specifies the designation of turning and copying tool holders and cartridges for indexable inserts (the 1995 edition is withdrawn)^[11]1 source · reference

Example

PCLNR 2525M12

Meaning of each position

• • Mitsubishi Materials:M = wedge-lock type, double clamp type for heavy cutting^[10]
  • Kyocera:M = double clamp method, W = wedge-lock method, C = clamp-on method, A = rear clamp method^[12]
  The meaning of M differs between manufacturers. See README-2.md
• • Mitsubishi Materials:X = special shape^[10]
• • Mitsubishi Materials:N = 62.5°, Q = 105°, Z = special^[10]
  • Kyocera:C = 90°, R = 75°, U = 93°, W = 60°, Y = 85°. N appears to be 63° from reading the table, but in the layout it is placed next to 95° and cannot be distinguished^[12]
  The angle for N is written differently by Mitsubishi (62.5°) and Kyocera (appears to be 63°)
• • Kyocera:B = 5°, D = 15°, P = 11°^[12]
• • Position 5
  • Item Hand
  • Symbol R
  • Symbol
    • R Right hand
    • L Left hand
    • N Neutral (no hand)
    ^[10][12]
• • Position 6
  • Item Shank height × width (mm)
  • Symbol 2525
  • Symbol Two digits each for height and width in mm (e.g. 2525 = 25×25, 08 = 8 mm)^[10][12]
• • Kyocera:A=32, B=40, C=50, G=90, J=110, JX=120, L=140, N=160, S=250, T=300, U=350, V=400, W=450, Y=500, X=special. Notes that for some products with machine-side constraints, the overall length and the symbol do not match^[12]
• • Position 8
  • Item Cutting edge length (insert size)
  • Symbol 12
  • Symbol Integer part of the cutting edge length, determined by insert shape and inscribed circle (e.g., 80° rhombic with 12.70 mm IC → 12; 9.525 mm → 09)^[10]1 source · reference

How to read the example

PCLNR 2525M12 = lever lock, 80° rhombic, 95° approach angle, 0° clearance angle (negative), right-hand, 25×25 mm shank, 150 mm overall length, cutting edge length 12 (for CN□□12□□ inserts)^[10][12]Each position read against both makers' symbol tables. An attempt was made to check individual product dimensions in Mitsubishi's web catalog, but it redirected to another web catalog page and the text could not be retrieved

▸Boring Bar Designation (ISO 6261)

Standard

ISO 6261 defines the designation of boring bars (cylindrical shank) for indexable inserts (the overview page is for the withdrawn 1995 edition; the current edition is 2011)^[13]1 source · reference

Example

S20R-SCLCR09

Meaning of each position

• • Position 1
  • Item Shank material
  • Symbol S
  • Symbol
    • S Steel shank
    • A Steel shank (with coolant hole)
    • C Carbide shank
    • E Carbide shank (with coolant hole)
    ^[14][15]Kyocera notes "includes steel head" for C and E
• • Position 2
  • Item Shank diameter (mm)
  • Symbol 20
  • Symbol 8、10、12、16、20、25、32、40^[14]1 source · referenceRange in Mitsubishi's symbol table
• • Kyocera:Also listed: G=90, J=110, L=140, N=160, P=170, W=450, Y=500, X=special^[15]
• • Kyocera:Also listed: C = clamp-on, M = double clamp, W = wedge lock^[15]
• • Kyocera:Also listed: J = 70° rhombic, R = round^[15]
• • Mitsubishi Materials:F = 91°^[14]
  • Kyocera:F = 90° (symbols P, S, W, Y, X, Z also exist, but the symbol-to-angle correspondence could not be confirmed from the extracted text)^[15]
  The angle for F differs: 91° in Mitsubishi, 90° in Kyocera
• • Kyocera:Also listed: B = 5°, D = 15°^[15]
• • Position 8
  • Item Hand
  • Symbol R
  • Symbol
    • R Right hand
    • L Left hand
    ^[14][15]
• • Position 9
  • Item Cutting edge length
  • Symbol 09
  • Symbol Determined by insert shape and inscribed circle (e.g., 80° rhombic: 9.525 mm IC → 09, 12.70 mm → 12)^[14]1 source · reference

Format by manufacturer

• Example: S16M S C L C R 09 (an example of notation with no hyphen after material, diameter, and length)^[14]
• Example: S12M-SCLPR09-16. The minimum bore diameter (mm) is appended at the end after a hyphen^[15]

How to read the example

S20R-SCLCR09 = steel shank, 20 mm diameter, 200 mm overall length, screw-on, 80° rhombic, 95° approach angle, 7° clearance angle, right-hand, cutting edge length 09^[14][15]

▸Boring Bar Overhang

L/D = overhang ÷ shank diameter. Conditions and products differ by maker, so no single value is given

▸Chucks

Jaws

• Soft jaws Soft jaws. Kitagawa uses the symbol SJ and builds the part number from chuck size, shape, serration pitch, and height^[20][21]1 source · referenceTwo pages from the same publisher (Kitagawa), so medium
• Hard jaws Hard jaws (hardened jaws). Kitagawa makes them to order; RÖHM lists hardened jaws in its catalog^[21][22]

Jaw serrations

• Metric fine serrations^[20][23][22]Schunk states compatibility with the Kitagawa B200 series
• Kitagawa jaw options (4th digit of the part number is 2)^[20][21]1 source · reference
• Inch-system serrations^[23][22]
• Inch-system serrations^[22]1 source · reference
• Other options listed in RÖHM's jaw order form^[22]1 source · reference

Spindle nose

• ISO part
  • ISO 702-1 Conical connection (short taper, form A; equivalent to DIN 55026)
  • ISO 702-2 Camlock type (DIN 55029; equivalent to ASA B5.9 D1)
  • ISO 702-3 Bayonet type (DIN 55027)
  ^[24][25][26]Part names are from the ISO overview pages; the correspondence with DIN and ASA is from RÖHM's catalog notation. ISO 702-4 (cylindrical connection) appeared only in a search summary and could not be confirmed in the text of a primary source
• Types A1, A2 ISO 702-1 short tapers include forms A1 and A2 (RÖHM's spindle nose notation 'A1/A2')^[26]1 source · reference
• Size (taper type) 4、5、6、8、11、15^[26][9]Sizes in RÖHM's ISO 702-1 chuck table. JIS A2-6 and A2-11 were confirmed in the Okuma catalog
• Size (camlock) 3、4、5、6、8、11、15^[26]1 source · referenceSizes in RÖHM's ISO 702-2 (camlock) chuck table
• Gauge diameter (Röhm, mm)
  • 4 82.62
  • 5 104.8
  • 6 133.4
  • 8 171.4
  • 11 235
  • 15 330.2
  ^[26]1 source · referenceThe F dimension in RÖHM's ISO 702-1 table, recorded as written in the catalog (it appears to be the reference diameter of the short taper, but the table heading gives no explanation and the meaning is unconfirmed)
• JIS Japanese machine catalogs write the spindle nose as "JIS A2-6" (Okuma MULTUS U: A2-6; big-bore version: A2-11)^[9]1 source · referenceThe correspondence between JIS B 6109 and ISO 702 (identical or modified) could not be confirmed because the JSA site could not be reached

▸Collet Chucks

Corresponding type

• 5C
• 16C
• DIN 6343 173E
• DIN 6343 185E
• DIN 6343 Varibore (673 series)
• Rubberflex
• DC clamping head

^[27]1 source · referenceCompatibility list for Kitagawa collet chucks

DIN 6343 177E

—Not confirmed in public sourcesNo public primary source explicitly mentioning 177E was found

DIN 6343 clamping diameter

—Not confirmed in public sourcesThe gripping diameter ranges of 173E and 185E could not be confirmed in official maker materials (distributor pages only)

5C

• Holding capacity, round 1-1/16" (26.99 mm)
• Holding capacity, hex 29/32" (23.02 mm)
• Holding capacity, square 3/4" (19.05 mm)
• Rear diameter 1.250" (31.75 mm)
• Overall length 3.281" (83.34 mm)
• Draw screw 1.238"×20 RH
• Internal stop screw 1.041"×24 RH

^[28]1 source · referenceDimension table from Hardinge. Rounds over 63/64" have no internal set screw. Another product page from the same company gives the hex gripping capacity as 7/8"; recorded in README-2.md

16C

• Holding capacity, round 1-5/8" (41.28 mm)
• Overall length 4.312" (109.52 mm)
• Draw screw 1.870"×1.75 mm RH

^[28]1 source · reference

▸Centers

Type

• Live center Live center
• Dead center Dead center

Shank

Inserted into the tailstock taper bore by its Morse taper shank. Example: the built-in tailstock of the Okuma MULTUS U3000/U4000 is MT No.4^[9]1 source · referenceMorse taper dimensions are handled separately (morse-tapers.json)

▸Tool Spindles on Multitasking Machines

HSK-T

• Standard HSK for turning on multitasking machines, standardized internationally as ISO 12164-3:2008. Compatible with HSK-A for machining centers (ISO 12164-1)^[29][30]
• JIS Established in 2013 as JIS B 6064-3^[29]1 source · reference
• Key fit
  • HSK-A63 Clearance between keyway and key: min 0.15 to max 0.33 mm
  • HSK-T63 Min 0.015 to max 0.075 mm
  ^[29][30]HSK-T has tighter key and keyway tolerances to ensure repeatable cutting edge position in turning
• Co-developed
  • Mitsubishi Materials:Jointly developed by 17 Japanese manufacturers^[29]
  • Kyocera:Jointly developed by 16 Japanese manufacturers (ICTM standard)^[30]
  The number of companies differs between sources
• Note HSK-T turning holders have a thick, short neck, so depending on the ATC specification they may not be mountable on multitasking machines with HSK-A specification^[29]1 source · reference

Capto

• Standard Coromant Capto is ISO 26623 (Kyocera sells polygon taper shanks conforming to ISO 26623-1 and JIS B 6066-1 "Polygonal taper shanks and spindle ends with two-face contact" as PSC-compatible tools)^[31][30]
• Size C3–C10. C8 and C10 for long boring bars on large lathes^[31]1 source · reference
• Kyocera PSC
  • PSC32 DCSFMS 32 mm
  • PSC40 40 mm
  • PSC50 50 mm
  ^[30]1 source · reference
• Sandvik's description Sandvik describes Capto as the only coupling that meets torque and bending stiffness requirements in both stationary and rotating applications (manufacturer's claim)^[31]1 source · reference

Adoption by machine

• Standard HSK-A63 (T63), optional CAPTO C6, KM4X63^[32]
• H1 spindle HSK-A63 (commercial DIN 69893-1 HSK-A63 milling tools can be used), optional CAPTO C6. Consult Okuma when using turning tools other than Okuma standard (some dimensions are original designs for fit accuracy)^[9]
• Capto turret option available on Super Mill WT-150, WY-250, and SC-200L^[5]
• Coromant Capto only (WTO's compatibility table)^[5]

KM

—Not confirmed in public sourcesThe content of the KM (ISO 26622) standard could not be confirmed because the Kennametal site denied access. The only adoption example confirmed is Mazak's KM4X63 option

DMG MORI

—Not confirmed in public sourcesThe tool spindle specifications of the DMG MORI NTX (Capto C6 / HSK-A63 / HSK-T63) could not be confirmed in the body of the official page (listed only on used-machine sales sites)