Slit couplings / hub clamping / cross slot / body: aluminium, steel, stainless steel / ASK / VMA Antriebstechnik

Slit couplings / hub clamping / cross slot / body: aluminium, steel, stainless steel / ASK / VMA Antriebstechnik
Stable and wear-free - even at high torques
· Isogonal power transmission
· Equalizes offsets
· Good resonance damping
· Extremely torsionally stiff
· High level of thermal stability
· Low mass inertia

Part Number

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Type ASK Patented, Sliced Coupling – with Customizable Dimension Options

Product Description

The ASK sliced coupling is the ideal tool for equalizing all kinds of offset. Its unique slit structure represents the perfect solution for misaligned shafts or installation situations involving high levels of resonance.
But the benefits of the parallel slit levels are not restricted to resonance damping: The ASK type series is also ideally suited to applications involving frequent load changes, even during reversing duty.

Another standout feature of this coupling is its one-part, compact design. The resulting high torsional stiffness and true running accuracy create excellent rotational characteristics that enable high speeds to be achieved. Thanks to the simple assembly method, which can be performed in a matter of seconds using just a single DIN 911 tool, couplings of this type can be incorporated into any drive train.

ASK sliced couplings from the standard range are suitable for shaft diameters ranging from 4 to 60 mm. However, we also offer a large number of special designs that allow you to choose from a wide range of fastening options – from the standard clamping hub connection, grub screw fastening on the shaft, spread hubs for hollow shafts, half-shell designs, and thread shaft connections, right through to VMA clamping device fastening methods that are suitable for larger diameters and ensure completely backlash-free power transmission.

Sliced couplings can be used in a varied range of applications. Their technology can be adapted to meet customer-specific requirements.

Offset equalizing options with ASK couplings

  axial  lateral  angular

ASK-BB Aluminum Alloy

Dimensions

TypeASK-BB aluminum alloy
Dimensions in mm 
ASK size018022020025030040050060070080100
L172028284048658095100118
M2.52.75445.55.59.512.512.512.515
N55.58811111925252530
E5.57.26.5910.51418.521252937
D18222025304050607080100
D1 ISO fit H73-63-104-86-126-148-1912-2614-2820-3525-4230-55
D2 ISO fit H73-63-104-86-126-148-1912-2614-2820-3525-4230-55
D1 pre-drilled2.52.52.53.55.55.58.58.518.523.528.5
D2 pre-drilled62.52.53.55.55.58.58.518.523.528.5
G Din 912M2.5M2.5M2.5M3M4M5M6M8M8M8M10
Fastening torque of 
screw Ma max. Nm
1.571.571.571.884.308.4514.535353570
Number of screws22222222444
Installation wrenchDIN 911

Technical Data

Technical data 
Rated torque Nm22368183065120170300
Torsional stiffness 103 Nm/Rad0.20.20.83.44.61124548893190
Mass8152030501003004007009001500
Moment of inertia 10-6 kgm20.30.41.54.311351142854806951060
Permitted shaft offsetangular °11221.71.71.41.41.11.11.1
 lateral mm0.30.30.20.20.20.30.30.30.30.30.3
 axial mm0.40.40.20.20.20.20.20.30.30.30.3

Material

Material: Aluminum alloy; rust-proof design; steel; all parts are also available with a feather key ways.
Speed: > 6,000 rpm; max. speeds of approx. 20,000 rpm on request; high temperatures of up to 500°C possible
ASK 018 BB / 022ASK 020-100 BB

ASK-BB Steel/Stainless Steel

Dimensions

TypeASK-BB steel/stainless steel
Dimensions in mm 
ASK size020025030040050060070080100
L28284048658095100118
M445.55.59.512.512.512.515
N8811111925252530
E6.5910.51418.521252937
D2025304050607080100
D1 ISO fit H74-86-126-148-1912-2614-2820-3525-4230-55
D2 ISO fit H74-86-126-148-1912-2614-2820-3525-4230-55
D1 pre-drilled2.53.55.55.58.514.518.523.528.5
D2 pre-drilled2.53.55.55.58.514.518.523.528.5
G Din 912M2.5M3M4M5M6M8M8M8M10
Fastening torque of
screw Ma max. Nm
1.571.884.308.4514.535353570
Number of screws222222444

Technical Data

Technical data 
Rated torque Nm1014183060110190240400
Torsional stiffness 103 Nm/Rad0.868215095120140180
Mass (approx.) in g45751403206501300185031004200
Permitted shaft offsetangular °121.71.711111
 lateral mm0.20.20.20.30.30.30.30.20.2
 axial mm0.20.20.20.20.20.20.20.20.2

Material

Material: 1.4305/steel
ASK 018 BB / 022 BBASK 020 BB / 100 BB

Sliced Couplings for Various Installation Situations and Shaft Connections

Material: Aluminum alloy; stainless steel; steel; PEEK
Coupling with spread hub for hollow shaftsCoupling with thread connection for thread shafts
(order example: ASK 025 BC 6H7/8h6)(order example: ASK 018 M-M M5/M6)
Part Number
ASK-018-BB-[3-6/1]-[3-6/1]-AL
ASK-020-BB-[4-8/1]-[4-8/1]-AL
ASK-022-BB-[3-10/1]-[3-10/1]-AL
ASK-025-BB-[6-12/1]-[6-12/1]-AL
ASK-030-BB-[6-14/1]-[6-14/1]-AL
ASK-040-BB-5.5-5.5-AL
ASK-040-BB-5.5-[8-19/1]-AL
ASK-040-BB-[8-19/1]-5.5-AL
ASK-040-BB-[8-19/1]-[8-19/1]-AL
ASK-050-BB-[12-26/1]-[12-26/1]-AL
ASK-060-BB-[14-28/1]-[14-28/1]-AL
ASK-070-BB-[20-35/1]-[20-35/1]-AL
ASK-080-BB-[25-42/1]-[25-42/1]-AL
ASK-100-BB-[30-55/1]-[30-55/1]-AL
Part NumberRelated toMinimum order quantityVolume Discount
Standard
Shipping Days
?
RoHSShaft Bore Dia. (machined) D1
(mm)
Shaft Bore Dia. (machined) D2
(mm)
Outer Dia. A
(mm)
Overall Length W
(mm)
Body Material Allowable Torque
(Nm)
Allowable Lateral Misalignment
(mm)
Allowable Angular Misalignment
(deg)
Allowable Axial Clearance (±)
(mm)
Moment of Inertia
(kg・m2)
1 4 Days 102.52.51817Aluminum Alloy20.310.40.0000003
1 4 Days 102.52.52028Aluminum Alloy30.220.20.0000015
1 4 Days 102.52.52220Aluminum Alloy20.210.40.0000004
1 4 Days 103.53.52528Aluminum Alloy60.220.20.0000043
1 4 Days 105.55.53040Aluminum Alloy80.31.70.20.000011
1 4 Days 105.55.54048Aluminum Alloy180.31.70.20.000035
1 4 Days 105.55.54048Aluminum Alloy180.31.70.20.000035
1 4 Days 105.55.54048Aluminum Alloy180.31.70.20.000035
1 4 Days 105.55.54048Aluminum Alloy180.31.70.20.000035
1 4 Days 108.58.55065Aluminum Alloy300.31.40.20.000114
1 4 Days 108.58.56080Aluminum Alloy650.31.40.30.000285
1 4 Days 1018.518.57095Aluminum Alloy1200.31.10.30.00048
1 4 Days 1023.523.580100Aluminum Alloy1700.31.10.30.000695
1 4 Days 1028.528.5100118Aluminum Alloy3000.31.10.30.00106

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Basic information

Type With Slit Allowable Misalignment Angular Misalignment / Eccentricity / Axial Misalignment Application Standard / Servo Motor / Stepping Motor / Encoder
Max. Rotational Speed(r/min) 20000

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