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Zero backlash bellows couplings
70-7

Zero backlash bellows couplings

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Item description/product images

DescriptionMaterial:Coupling hubs stainless steel 1.4305.
Metal bellows stainless steel 1.4541 (welded).
Clamping screws stainless steel A2-70.
Note:The radial clamping hub allows for a considerably shorter assembly time and greatly eases mounting even in difficult to access spaces. The required torque for the screws must be adhered to.Assembly:The fit shaft to bore should be a transition fit.
The clearance should be min. 0.01 mm and max. 0.03 mm i.e.
Shaft Ø16 j6
Bore Ø16 H7
Diameters smaller than Dmin are possible, however, a sure transfer of the coupling torque is no longer guaranteed.
As the bellows are made of very thin stainless steel sheet, great care should be taken during assembly and dismantling. Damage to the bellows could make the coupling unusable.
On request:List required hub bore D1 and D2 with limits or fits separately.
DownloadHere is all the information as a PDF datasheet:

Are you looking for CAD data? These can be found directly in the product table.
 Datasheet 70-7 Zero backlash bellows couplings 173 kB
 NovoNox_2013_Couplings_EN 66,1 kB

Drawings

Zero backlash bellows couplings

Item selection/filter

Order No.

SizeD1/D2
predrilled
D1/D2
max.
LL1L2DD3AHC
(DIN 912)
Tightening
torque
max. Nm
CADAcc.PriceOrder
70-7-111025711232454517,548M53,7 96.00 €
70-7-22102573152456562056M66,4 116.00 €
70-7-3314358919,53166662470M815,3 143.00 €
70-7-44204010321,53582842884M1031 170.00 €
70-7-55204010421,53682842884M1031 178.00 €
70-7-66254211325,53790903193M1252 199.00 €
70-7-77324511526401109635102M1252 218.00 €
Order No.

SizeNominal
torque
Nm
Inertia
torque
(10⁻⁶ kgm²)
Torsion spring stiffness
(10³ Nm/rad)
Radial spring
stiffness
N/mm
Axial
spring stiffness
N/mm
Max.
axial shaft
displacement ±
Max.
lateral shaft
displacement
Max.
angular shaft
displacement
max.
speed
U/min
CADAcc.PriceOrder
70-7-11180,232685400,50,21,5°12.700 96.00 €
70-7-22300,46425220300,50,21,5°10.200 116.00 €
70-7-33601,4550330550,50,21,5°8.600 143.00 €
70-7-44802,875400550,50,21,5°6.800 170.00 €
70-7-551502,8100600850,50,21,5°6.800 178.00 €
70-7-662004,2120450850,50,21,5°6.300 199.00 €
70-7-773006,22801.5001500,50,21,5°5.900 218.00 €
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