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 into 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 (in)
De - External diameter (in)
L0 - Unloaded length (in)
Ln - Max. loaded length (in)
Sn - Maximum travel (in)
Fn - Maximum load at Ln (lbs)
R - Spring constant (lb/in)
db - Wire loops (in)

Items 1-10 of 20

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d
Wire diameter (in)
De
External diameter (in)
L0
Unloaded length (in)
Ln
Max. loaded length (in)
Sn
Maximum travel (in)
Fn
Maximum load at Ln (lbs)
R
Spring constant (lb/in)
db
Wire loops (in)
SKU Tech Drawing Compare Read More 3D CAD Stock View prices - Add to Cart
0,0394 0,2874 1,5748 1,9528 0,3780 8,9024 23,4687 0,0394 BF-10980 BF-10980 -
0,0394 0,2874 1,9685 2,5197 0,5512 8,8125 15,9313 0,0394 BF-10981 BF-10981 -
0,0394 0,2874 2,3622 2,9685 0,6063 5,3729 8,8507 0,0394 BF-10982 BF-10982 -
0,0630 0,5551 3,1496 4,4882 0,1339 26,3026 19,7 0,063 BF-10983 BF-10983 -
0,0630 0,5551 3,9370 5,9055 1,9685 26,7523 13,3617 0,063 BF-10984 BF-10984 -
0,0630 0,5551 4,9213 7,9134 2,9921 27,2019 9,022 0,063 BF-10985 BF-10985 -
0,0787 0,8661 5,9055 8,5827 2,6772 31,6981 11,7058 0,0787 BF-10986 BF-10986 -
0,0787 0,8661 6,8898 10,8268 3,9370 31,4733 7,9942 0,0787 BF-10987 BF-10987 -
0,0787 0,8661 7,8740 12,0472 4,1732 26,7523 6,3954 0,0787 BF-10988 BF-10988 -
0,0787 0,8661 8,8583 14,7638 5,9055 31,6981 5,3675 0,0787 BF-10989 BF-10989 -
  1. BF-10980
    In stock: 7
    d - Wire diameter (in) 0,0394
    De - External diameter (in) 0,2874
    L0 - Unloaded length (in) 1,5748
    Ln - Max. loaded length (in) 1,9528
    Sn - Maximum travel (in) 0,3780
    Fn - Maximum load at Ln (lbs) 8,9024
    R - Spring constant (lb/in) 23,4687
    db - Wire loops (in) 0,0394
  2. BF-10981
    In stock: 12
    d - Wire diameter (in) 0,0394
    De - External diameter (in) 0,2874
    L0 - Unloaded length (in) 1,9685
    Ln - Max. loaded length (in) 2,5197
    Sn - Maximum travel (in) 0,5512
    Fn - Maximum load at Ln (lbs) 8,8125
    R - Spring constant (lb/in) 15,9313
    db - Wire loops (in) 0,0394
  3. BF-10982
    In stock: 17
    d - Wire diameter (in) 0,0394
    De - External diameter (in) 0,2874
    L0 - Unloaded length (in) 2,3622
    Ln - Max. loaded length (in) 2,9685
    Sn - Maximum travel (in) 0,6063
    Fn - Maximum load at Ln (lbs) 5,3729
    R - Spring constant (lb/in) 8,8507
    db - Wire loops (in) 0,0394
  4. BF-10983
    In stock: 9
    d - Wire diameter (in) 0,0630
    De - External diameter (in) 0,5551
    L0 - Unloaded length (in) 3,1496
    Ln - Max. loaded length (in) 4,4882
    Sn - Maximum travel (in) 0,1339
    Fn - Maximum load at Ln (lbs) 26,3026
    R - Spring constant (lb/in) 19,7
    db - Wire loops (in) 0,063
  5. BF-10984
    In stock: 5
    d - Wire diameter (in) 0,0630
    De - External diameter (in) 0,5551
    L0 - Unloaded length (in) 3,9370
    Ln - Max. loaded length (in) 5,9055
    Sn - Maximum travel (in) 1,9685
    Fn - Maximum load at Ln (lbs) 26,7523
    R - Spring constant (lb/in) 13,3617
    db - Wire loops (in) 0,063
  6. BF-10985
    In stock: 15
    d - Wire diameter (in) 0,0630
    De - External diameter (in) 0,5551
    L0 - Unloaded length (in) 4,9213
    Ln - Max. loaded length (in) 7,9134
    Sn - Maximum travel (in) 2,9921
    Fn - Maximum load at Ln (lbs) 27,2019
    R - Spring constant (lb/in) 9,022
    db - Wire loops (in) 0,063
  7. BF-10986
    In stock: 8
    d - Wire diameter (in) 0,0787
    De - External diameter (in) 0,8661
    L0 - Unloaded length (in) 5,9055
    Ln - Max. loaded length (in) 8,5827
    Sn - Maximum travel (in) 2,6772
    Fn - Maximum load at Ln (lbs) 31,6981
    R - Spring constant (lb/in) 11,7058
    db - Wire loops (in) 0,0787
  8. BF-10987
    In stock: 7
    d - Wire diameter (in) 0,0787
    De - External diameter (in) 0,8661
    L0 - Unloaded length (in) 6,8898
    Ln - Max. loaded length (in) 10,8268
    Sn - Maximum travel (in) 3,9370
    Fn - Maximum load at Ln (lbs) 31,4733
    R - Spring constant (lb/in) 7,9942
    db - Wire loops (in) 0,0787
  9. BF-10988
    In stock: 3
    d - Wire diameter (in) 0,0787
    De - External diameter (in) 0,8661
    L0 - Unloaded length (in) 7,8740
    Ln - Max. loaded length (in) 12,0472
    Sn - Maximum travel (in) 4,1732
    Fn - Maximum load at Ln (lbs) 26,7523
    R - Spring constant (lb/in) 6,3954
    db - Wire loops (in) 0,0787
  10. BF-10989
    In stock: 6
    d - Wire diameter (in) 0,0787
    De - External diameter (in) 0,8661
    L0 - Unloaded length (in) 8,8583
    Ln - Max. loaded length (in) 14,7638
    Sn - Maximum travel (in) 5,9055
    Fn - Maximum load at Ln (lbs) 31,6981
    R - Spring constant (lb/in) 5,3675
    db - Wire loops (in) 0,0787

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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