Draw bar springs

Technical drawing - Draw bar spring

Draw bar springs for fast delivery!
Draw bar springs are stock items and are available for fast delivery. Buy your Draw bar spring from our online shop now!

A draw bar spring consists of one compression spring and two brackets. With one bracket at each end, the compression spring converts to an extension spring. The brackets are much stronger than the regular loops on extension springs. However, they require more space, and they are considerably more expensive.

 
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Shopping Options
d - Wire diameter (mm)
De - External diameter (mm)
L0 - Unloaded length (mm)
Ln - Max. loaded length (mm)
Sn - Maximum travel (mm)
Fn - Maximum load at Ln (N)
R - Spring constant (N/mm)
db - Wire loops (mm)

Items 1-10 of 20

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d
Wire diameter (mm)
De
External diameter (mm)
L0
Unloaded length (mm)
Ln
Max. loaded length (mm)
Sn
Maximum travel (mm)
Fn
Maximum load at Ln (N)
R
Spring constant (N/mm)
db
Wire loops (mm)
SKU Tech Drawing Compare Read More Add to Cart Stock 3D CAD
1,00 7,30 40,00 49,60 9,60 39,60 4,11 1,00 BF-10980 BF-10980 9
1,00 7,30 50,00 64,00 14,00 39,20 2,79 1,00 BF-10981 BF-10981 6
1,00 7,30 60,00 75,40 15,40 23,90 1,55 1,00 BF-10982 BF-10982 6
1,60 14,10 80,00 114,00 3,40 117,00 3,45 1,60 BF-10983 BF-10983 7
1,60 14,10 100,00 150,00 50,00 119,00 2,34 1,60 BF-10984 BF-10984 3
1,60 14,10 125,00 201,00 76,00 121,00 1,58 1,60 BF-10985 BF-10985 5
2,00 22,00 150,00 218,00 68,00 141,00 2,05 2,00 BF-10986 BF-10986 6
2,00 22,00 175,00 275,00 100,00 140,00 1,40 2,00 BF-10987 BF-10987 7
2,00 22,00 200,00 306,00 106,00 119,00 1,12 2,00 BF-10988 BF-10988 3
2,00 22,00 225,00 375,00 150,00 141,00 0,94 2,00 BF-10989 BF-10989 14
  1. BF-10980
    In stock: 9
    d - Wire diameter (mm) 1,00
    De - External diameter (mm) 7,30
    L0 - Unloaded length (mm) 40,00
    Ln - Max. loaded length (mm) 49,60
    Sn - Maximum travel (mm) 9,60
    Fn - Maximum load at Ln (N) 39,60
    R - Spring constant (N/mm) 4,11
    db - Wire loops (mm) 1,00
  2. BF-10981
    In stock: 6
    d - Wire diameter (mm) 1,00
    De - External diameter (mm) 7,30
    L0 - Unloaded length (mm) 50,00
    Ln - Max. loaded length (mm) 64,00
    Sn - Maximum travel (mm) 14,00
    Fn - Maximum load at Ln (N) 39,20
    R - Spring constant (N/mm) 2,79
    db - Wire loops (mm) 1,00
  3. BF-10982
    In stock: 6
    d - Wire diameter (mm) 1,00
    De - External diameter (mm) 7,30
    L0 - Unloaded length (mm) 60,00
    Ln - Max. loaded length (mm) 75,40
    Sn - Maximum travel (mm) 15,40
    Fn - Maximum load at Ln (N) 23,90
    R - Spring constant (N/mm) 1,55
    db - Wire loops (mm) 1,00
  4. BF-10983
    In stock: 7
    d - Wire diameter (mm) 1,60
    De - External diameter (mm) 14,10
    L0 - Unloaded length (mm) 80,00
    Ln - Max. loaded length (mm) 114,00
    Sn - Maximum travel (mm) 3,40
    Fn - Maximum load at Ln (N) 117,00
    R - Spring constant (N/mm) 3,45
    db - Wire loops (mm) 1,60
  5. BF-10984
    In stock: 3
    d - Wire diameter (mm) 1,60
    De - External diameter (mm) 14,10
    L0 - Unloaded length (mm) 100,00
    Ln - Max. loaded length (mm) 150,00
    Sn - Maximum travel (mm) 50,00
    Fn - Maximum load at Ln (N) 119,00
    R - Spring constant (N/mm) 2,34
    db - Wire loops (mm) 1,60
  6. BF-10985
    In stock: 5
    d - Wire diameter (mm) 1,60
    De - External diameter (mm) 14,10
    L0 - Unloaded length (mm) 125,00
    Ln - Max. loaded length (mm) 201,00
    Sn - Maximum travel (mm) 76,00
    Fn - Maximum load at Ln (N) 121,00
    R - Spring constant (N/mm) 1,58
    db - Wire loops (mm) 1,60
  7. BF-10986
    In stock: 6
    d - Wire diameter (mm) 2,00
    De - External diameter (mm) 22,00
    L0 - Unloaded length (mm) 150,00
    Ln - Max. loaded length (mm) 218,00
    Sn - Maximum travel (mm) 68,00
    Fn - Maximum load at Ln (N) 141,00
    R - Spring constant (N/mm) 2,05
    db - Wire loops (mm) 2,00
  8. BF-10987
    In stock: 7
    d - Wire diameter (mm) 2,00
    De - External diameter (mm) 22,00
    L0 - Unloaded length (mm) 175,00
    Ln - Max. loaded length (mm) 275,00
    Sn - Maximum travel (mm) 100,00
    Fn - Maximum load at Ln (N) 140,00
    R - Spring constant (N/mm) 1,40
    db - Wire loops (mm) 2,00
  9. BF-10988
    In stock: 3
    d - Wire diameter (mm) 2,00
    De - External diameter (mm) 22,00
    L0 - Unloaded length (mm) 200,00
    Ln - Max. loaded length (mm) 306,00
    Sn - Maximum travel (mm) 106,00
    Fn - Maximum load at Ln (N) 119,00
    R - Spring constant (N/mm) 1,12
    db - Wire loops (mm) 2,00
  10. BF-10989
    In stock: 14
    d - Wire diameter (mm) 2,00
    De - External diameter (mm) 22,00
    L0 - Unloaded length (mm) 225,00
    Ln - Max. loaded length (mm) 375,00
    Sn - Maximum travel (mm) 150,00
    Fn - Maximum load at Ln (N) 141,00
    R - Spring constant (N/mm) 0,94
    db - Wire loops (mm) 2,00

Items 1-10 of 20

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Material

Stainless steel:
DIN 17224 AISI 302 WERKSTOFF NO. 1.4310
Working temperature between -200 ºC and +250 ºC

Terminology
Technical information - draw bar springs
d
=
Wire in mm (spring)
db
=
Wire in mm (bracket)
De
=
External diameter in mm
Bi
=
Internal diameter bracket
Lh
=
Bracket height internal
R
=
Spring force N/mm
L0
=
Unloaded total length measured internal in brackets
Ln
=
Max. loaded length
sn
=
Max. travel
Fn
=
Max. force
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