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Automobiles and Industrial Equipment

General (Pull) Cables

Parking brake cable and AT cable

Product Features

  • Low cost and lightweight.
  • Excellent flexibility and easy to install.
  • Highly reliable mechanical transmission.
  • Can be used in combination with a wide variety of installation parts.

Outer casing

(1) Functions

Guides and protects the inner cable

(2) Construction
Outer casing

Materials Used

  Coat Spring Liner
Material PVC
PP
SWRH
SUS
PE
POM
FEP
Outside diameter Outside diameter φ 5, 6, 7, 8, 9, 10, 11, 12, 13

Operation Temperature Range Depending on Coat and Liner Materials

Coat
Material Operation Temperature Range
PP -40°C to +120°C
(PVC) -25°C to +80°C
*Use of PVC has been terminated due to environmental concerns.
Liner
Material Operation Temperature Range
PE -40°C to +80°C
POM -40°C to +120°C
PBT -40°C to +100°C
FEP -40°C to +160°C

Inner cable

(1) Functions

Transmits power and displacement.

(2) Construction
  Single-Twisted Core Multi-Twisted Core Coat Core
Construction
Single-Twisted Core
Multi-Twisted Core
Coat Core
Features

φ 1.2: 1 × 12
φ 1.5 to φ 4.0: 1 × 19

  • Low cost but is weak as small bending radiuses.

7 × 7

  • Standard multi-twisted construction.
  • Low rigidity allows it to support small bending radiuses.

7 × 19

  • Used when smaller bending radiuses are required.
  • Used for high loads.
Material SWRH or SUS SWRH or SUS SWRH
<Coat material>
PE, PA, PFA
Size Outside diameter φ 1.2, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0
(Coat types are 0.6 to 0.8 larger depending on the size.)

Operation Temperature Range Depending on Inner Coat Material

Material PE PA PFA
Operation Temperature Range -40°C to +80°C -40°C to +120°C -40°C to +160°C

Outer Casing, Inner Cable Selection Criteria

Outer Casing, Inner Cable Selection Criteria

Strength requirements

φ Normal Operation Force Max. Operation Force During Emergencies Applicable Conduit Size Cable Min. Bending R
1 million times 100,000 times
Endurance Endurance Inner Multi-twisted Inner Single-twisted
φ1.2 Up to 29.4 N
(Up to 3 kgf)
Up to 78.4 N
(Up to 8 kgf)
Up to 294 N
(Up to 30 kgf)
φ5 R50 R50
φ1.5 49 N
(5 kgf)
127.4 N
(13 kgf)
490 N
(50 kgf)
φ5
(φ6)
R50 R55
φ2.0 98 N
(10 kgf)
215.6 N
(22 kgf)
882 N
(90 kgf)
φ6
(φ7)
R60 R70
φ2.5 176 N
(18 kgf)
343 N
(35 kgf)
1.37 kN
(140 kgf)
φ8
(φ7)
R70 R90
φ3.0 245 N
(25 kgf)
490 N
(50 kgf)
1.96 kN
(200 kgf)
φ9
(φ10)
R90 R100
φ3.5 343 N
(35 kgf)
686 N
(70 kgf)
2.65 kN
(270 kgf)
φ10
(φ12)
R100 R120
φ4.0 441 N
(45 kgf)
882 N
(90 kgf)
3.43 kN
(350 kgf)
φ12
(φ13)
R120 R130

Layout requirements

  • Select single-twisted or multi-twisted depending on the minimum bending radius.
  • Generally, multi-twisted with a small bare wire diameter has lower bending rigidity, so the no load resistance is smaller and the return performance improves.
  • Under less strict usage conditions, using single-twisted is more cost effective.

About inner coats and liners

  • To improve load efficiency, the lineup includes inner coat types where the inner cable is coated with plastic, and liner types where a plastic pipe is inserted inside the outer casing.
  • Generally, the inner coat type is used when the application calls for high loads and a durability of 100,000 times. A sealed construction is easier to obtain than with the liner type.

Components

Components

Inner cable end piece

This is used to connect the inner cable to the other component and to adjust the cable length.
This fastens the outer casing to the other component.

Other parts

These prevent interference with surrounding parts,
prevent the transmission of vibration to the inner cable and outer casing,
prevent dust and water from getting into the outer casing.

Names and materials of the components

  Type Part Name Part Shape Material
1 Inner cable end fitting T-end
T-end
ZDC, C3602
Nipple end
Nipple end
S35C, SWCH12A
U-fitting
U-fitting
SP
I-end
I-end
S35C, SWCH12A
Screw end
Screw end
S35C, SWCH12A
2 Outer casing end fitting Casing cap
Casing cap
SS400, STKM or ZDC, POM
Screw cap
Screw cap
SS400, SWCH or ZDC
3 Other components Guide, bushing
Guide, bushing
POM, PA
Bend pipe
Bend pipe
STKM, SP
Protector
Protector
PVC, EPDM, TSR (HI-LEX Original)
Clamp (bracket)
Clamp (bracket)
SP
Damper
Damper
EPDM, CR
Boots, seal cover
Boots, seal cover
EPDM, CR
Grommets
Grommets
EPDM, CR

Cable Performance / Precautions

Cable Performance / Precautions

Inner cable expansion

Inner cable expansion
  For Loads at 60% of the Prescribed Shear Load
Size Load Total Elongation Elastic Elongation Permanent Elongation
1.2 Single 0.88 kN 0.62% 0.58% 0.04%
Multi 0.70 kN 0.63% 0.61% 0.02%
1.5 Single 1.47 kN 0.58% 0.55% 0.03%
Multi 1.06 kN 0.66% 0.61% 0.05%
2.0 Single 2.47 kN 0.65% 0.61% 0.04%
Multi 1.82 kN 0.73% 0.66% 0.07%
2.5 Single 3.70 kN 0.60% 0.58% 0.02%
Multi 2.82 kN 0.75% 0.66% 0.09%
3.0 Single 4.50 kN 0.64% 0.59% 0.05%
Multi 4.12 kN 0.84% 0.73% 0.11%
3.5 Single 6.47 kN 0.81% 0.70% 0.11%
Multi 5.41 kN 0.78% 0.71% 0.07%
4.0 Single 8.82 kN 0.73% 0.66% 0.07%
Multi 7.06 kN 1.03% 0.89% 0.14%

Stroke efficiency

Stroke efficiency

Stroke loss

Stroke loss

Load efficiency

Load efficiency

Cable handling and design precautions

  • No bends smaller than the minimum bending R even during installation.
  • Position to avoid direct contact with the heat when the cable passes through hot areas.
  • Install so as to keep water from getting into it.
  • No bending R from the base of the inner cable end fitting (I-end, screw end, etc.) and outer casing end fitting.
  • Clamp the cable where necessary.