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What Is Fiber Optic Cable?
Optical fiber cable is a type of communication cable. It uses one or more optical fibers in a protective covering to transmit information. We can use optical fiber cables alone or in groups to meet specific performance requirements.
Fiber cables are mainly composed of optical fibers (glass fibers as thin as hair), plastic protective sleeves, and plastic sheath. There are no metals such as gold, silver, copper, aluminum, etc. inside the cable, and it generally has no recycling value.
Basic Structure
Fiber Optic Cable Types
1. According to different transmission performance, distance, and purpose, optical fiber cables can be divided into end user fiber cable, local telephone cable, long distance cable, and underwater fiber optic cable.
2. According to the types of optical fibers used, they can be divided into single mode fiber optic cable and multimode fiber optic cable.
3. According to the number of fiber cores inside, it can be divided into single core optical cable, dual core fiber cable, multi-fiber cable, etc.
4. According to the different configuration methods of reinforcement components, optical cables can be divided into central reinforcement optical cables, dispersed reinforcement optical cables, protective layer reinforcement optical cables, and comprehensive outer protective layer optical cables.
5. According to the different transmission conductor and medium conditions, optical cables can be divided into non-metallic fiber cable, ordinary optical cables, and comprehensive optical cables (mainly used for railway dedicated network communication lines).
6. According to different laying methods, optical cables can be divided into pipeline optical cables, underground fiber optic cable (direct burial fiber optic cable), aerial fiber optic cable, and submarine fiber optic cable
Optical Fiber Cables Limit
The Optical Fiber cables are mainly limited by two indicators: allowable tensile strength and flattening forces. See below:Cable typeAllowable tensile (N)Allowable tensile (N)Allowable flattening forces (N/100mm)Allowable flattening forces (N/100mm)Short termLong termShort termLong termDuct, non self-supporting aerial fiber optic cable15006001000300underground fiber optic cable3000100030001000Special direct burial fiber optic cable10000400050003000undersea fiber optic cable （20000N）200001000050003000submarine fiber optic cable（40000N）400002000080005000
Pre Terminated Fiber Cable Methods
The main methods include permanent connections, emergency connections, and active connections.
1. Permanent fiber optic connection (also known as fiber optic splicing)
2. Emergency connection (also known as cold melt, related product will be mechanical connector or fast connector)
3. Activity Connection
How To Choose Optical Fiber Cable?
Except fiber count and fiber types, we should consider the external sheath of the cable according to its usage environment when we choose which kind of the optic fiber cable.
1. If directly burying outdoor, armored optic fiber cable should be selected such as GYTS GYTA GYXTW, etc. When overhead, a black plastic outer sheath with two or more reinforcing ribs can be used, such as self-supporting drop cable, figure-8 cable, etc.
2. If used in buildings, should care the flame retardant, toxicity, and smoke characteristics. Generally, flame retardant but smokeless types (Plenum) can be selected in pipelines or forced ventilation areas, while flame-retardant, non-toxic, and smokeless types (Riser) should be selected in exposed environments.
3. If vertically laying cables inside the building, distribution cable can be used; If deploying horizontally, breakout cables can be selected.
If the transmission distance is within 2km, multimode fiber can be selected. If the distance exceeds 2km, relay or single mode fiber can be used.
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TIMKEN 496D/492A Bearing stocks in China
TIMKEN 496D/492A
Double Row TIMKEN 496D/492A Inch Tapered Roller Bearing
TIMKEN 496D/492A consists of a single-piece (double) inner ring 496D plus two single outer ring 492A. It is normally supplied complete with an outer-ring spacer as a pre-set assembly.
Consult your Timken engineer before making a final bearing selection about TIMKEN 496D/492A to help ensure suitability, availability and the most cost-effective solution
Bearing 496D/492A Technical Data
Bearing Part 496D/492A Bearing type: Double Row Tapered Roller Bearing Brand: TIMKEN Other Inch type Inner(Cone) 496D Dynamic C1 269000N Outer(Cup) 492A Factors e 0.4 Bore (d) 80.962mm Factors Y1 1.5 O.D (D) 133.35mm Dynamic C90 40000N Width(T) 60.325mm Dynamic Ca90 30500N Double Innering Width B 59.538 Factors K 1.31 Dynamic C1 269000 Factors Y2 2.3 Dynamic Ca90(2) 69700 Weight: 3.25kg
Timken 496D/492A Drawing
To know more information about TIMKEN 496D/492A, Please visit https://www.bearingsift.com/timken-496d-492a/
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TIMKEN 496/493D Bearing stocks in China
TIMKEN 496/493D
Double Row TIMKEN 496/493D Inch Tapered Roller Bearing
TIMKEN 496/493D consists of a single-piece (double)
outer ring 493D and two single inner ring 496.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 496/493D can be used at fixed positions or allowed to fl oat in the housing bore to compensate for shaft expansion.
D suffi x has a groove with oil holes for lubrication through the outer ring
CD suffi x now replaces the DC suffi x listed for part numbers in previous publications. Same features as D suffi x, but CD also has groove with oil holes. One lubrication hole is counterbored to accept an anti-rotational pin.
Bearing 496/493D Technical Data
Bearing Part 496/493D Bearing type: Double row tapered roller bearing Brand TIMKEN Other Inch type Inner(Cone) 496 Dynamic C1 269000N Outer(Cup) 493D Factors e 0.44 Bore (d) 80.962mm Factors Y 1.52 O.D (D) 136.525mm Dynamic C90 40000N Width(T) 69.85mm Dynamic Ca90 30500N Dynamic C90(2) 69700N Factors K 1.31 Outer Ring Width(C) 53.975mm Factors Y2 2.26N Origin USA Weight: 3.74kg
Timken 496/493D Drawing
To know more information about TIMKEN 496/493D, Please visit http://www.bearingsift.com/timken-496-493d/
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TIMKEN 496/493D Bearing stocks in China
TIMKEN 496/493D
Double Row TIMKEN 496/493D Inch Tapered Roller Bearing
TIMKEN 496/493D consists of a single-piece (double)
outer ring 493D and two single inner ring 496.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 496/493D can be used at fixed positions or allowed to fl oat in the housing bore to compensate for shaft expansion.
D suffi x has a groove with oil holes for lubrication through the outer ring
CD suffi x now replaces the DC suffi x listed for part numbers in previous publications. Same features as D suffi x, but CD also has groove with oil holes. One lubrication hole is counterbored to accept an anti-rotational pin.
Bearing 496/493D Technical Data
Bearing Part 496/493D Bearing type: Double row tapered roller bearing Brand TIMKEN Other Inch type Inner(Cone) 496 Dynamic C1 269000N Outer(Cup) 493D Factors e 0.44 Bore (d) 80.962mm Factors Y 1.52 O.D (D) 136.525mm Dynamic C90 40000N Width(T) 69.85mm Dynamic Ca90 30500N Dynamic C90(2) 69700N Factors K 1.31 Outer Ring Width(C) 53.975mm Factors Y2 2.26N Origin USA Weight: 3.74kg
Timken 496/493D Drawing
To know more information about TIMKEN 496/493D, Please visit https://www.bearingsift.com/timken-496-493d/
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TIMKEN 498/493D Bearing stocks in China
TIMKEN 498/493D
Double Row TIMKEN 498/493D Inch Tapered Roller Bearing
TIMKEN 498/493D consists of a single-piece (double)
outer ring 493D and two single inner ring 498.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 498/493D can be used at fixed positions or allowed to fl oat in the housing bore to compensate for shaft expansion.
D suffi x has a groove with oil holes for lubrication through the outer ring
CD suffi x now replaces the DC suffi x listed for part numbers in previous publications. Same features as D suffi x, but CD also has groove with oil holes. One lubrication hole is counterbored to accept an anti-rotational pin.
Bearing 498/493D Technical Data
Bearing Part 498/493D Bearing type: Double row tapered roller bearing Brand TIMKEN Other Inch type Inner(Cone) 498 Dynamic C1 269000N Outer(Cup) 493D Factors e 0.44 Bore (d) 84.138mm Factors Y 1.52 O.D (D) 136.525mm Dynamic C90 40000N Width(T) 69.85mm Dynamic Ca90 30500N Dynamic C90(2) 69700N Factors K 1.31 Outer Ring Width(C) 53.975mm Factors Y2 2.26N Origin USA Weight: 3.53kg
Timken 498/493D Drawing
To know more information about TIMKEN 498/493D, Please visit https://www.bearingsift.com/timken-498-493d/
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TIMKEN 495A/493D Bearing stocks in China
TIMKEN 495A/493D
Double Row TIMKEN 495A/493D Inch Tapered Roller Bearing
TIMKEN 495A/493D consists of a single-piece (double)
outer ring 493D and two single inner ring 495A.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 495A/493D can be used at fixed positions or allowed to fl oat in the housing bore to compensate for shaft expansion.
D suffi x has a groove with oil holes for lubrication through the outer ring
CD suffi x now replaces the DC suffi x listed for part numbers in previous publications. Same features as D suffi x, but CD also has groove with oil holes. One lubrication hole is counterbored to accept an anti-rotational pin.
Bearing 495A/493D Technical Data
Bearing Part 495A/493D Bearing type: Double row tapered roller bearing Brand TIMKEN Other Inch type Inner(Cone) 495A Dynamic C1 269000N Outer(Cup) 493D Factors e 0.44 Bore (d) 76.2mm Factors Y 1.52 O.D (D) 136.525mm Dynamic C90 40000N Width(T) 69.85mm Dynamic Ca90 30500N Dynamic C90(2) 69700N Factors K 1.31 Outer Ring Width(C) 53.975mm Factors Y2 2.26N Origin USA Weight: 4.04kg
Timken 495A/493D Drawing
To know more information about TIMKEN 495A/493D, Please visit http://www.bearingsift.com/timken-495a-493d/
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TIMKEN 497/493D Bearing stocks in China
TIMKEN 497/493D
Double Row TIMKEN 497/493D Inch Tapered Roller Bearing
TIMKEN 497/493D consists of a single-piece (double)
outer ring 493D and two single inner ring 497.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 497/493D can be used at fixed positions or allowed to fl oat in the housing bore to compensate for shaft expansion.
D suffi x has a groove with oil holes for lubrication through the outer ring
CD suffi x now replaces the DC suffi x listed for part numbers in previous publications. Same features as D suffi x, but CD also has groove with oil holes. One lubrication hole is counterbored to accept an anti-rotational pin.
Bearing 497/493D Technical Data
Bearing Part 497/493D Bearing type: Double row tapered roller bearing Brand TIMKEN Other Inch type Inner(Cone) 497 Dynamic C1 269000N Outer(Cup) 493D Factors e 0.44 Bore (d) 85.725mm Factors Y 1.52 O.D (D) 136.525mm Dynamic C90 40000N Width(T) 69.85mm Dynamic Ca90 30500N Dynamic C90(2) 69700N Factors K 1.31 Outer Ring Width(C) 53.975mm Factors Y2 2.26N Origin USA Weight: 3.42kg
Timken 497/493D Drawing
To know more information about TIMKEN 497/493D, Please visit https://www.bearingsift.com/timken-497-493d/
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TIMKEN 497/493D Bearing stocks in China
TIMKEN 497/493D
Double Row TIMKEN 497/493D Inch Tapered Roller Bearing
TIMKEN 497/493D consists of a single-piece (double)
outer ring 493D and two single inner ring 497.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 497/493D can be used at fixed positions or allowed to fl oat in the housing bore to compensate for shaft expansion.
D suffi x has a groove with oil holes for lubrication through the outer ring
CD suffi x now replaces the DC suffi x listed for part numbers in previous publications. Same features as D suffi x, but CD also has groove with oil holes. One lubrication hole is counterbored to accept an anti-rotational pin.
Bearing 497/493D Technical Data
Bearing Part 497/493D Bearing type: Double row tapered roller bearing Brand TIMKEN Other Inch type Inner(Cone) 497 Dynamic C1 269000N Outer(Cup) 493D Factors e 0.44 Bore (d) 85.725mm Factors Y 1.52 O.D (D) 136.525mm Dynamic C90 40000N Width(T) 69.85mm Dynamic Ca90 30500N Dynamic C90(2) 69700N Factors K 1.31 Outer Ring Width(C) 53.975mm Factors Y2 2.26N Origin USA Weight: 3.42kg
Timken 497/493D Drawing
To know more information about TIMKEN 497/493D, Please visit http://www.bearingsift.com/timken-497-493d/
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TIMKEN 495AS/493D Bearing stocks in China
TIMKEN 495AS/493D
Double Row TIMKEN 495AS/493D Inch Tapered Roller Bearing
TIMKEN 495AS/493D consists of a single-piece (double)
outer ring 493D and two single inner ring 495AS.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 495AS/493D can be used at fixed positions or allowed to fl oat in the housing bore to compensate for shaft expansion.
D suffi x has a groove with oil holes for lubrication through the outer ring
CD suffi x now replaces the DC suffi x listed for part numbers in previous publications. Same features as D suffi x, but CD also has groove with oil holes. One lubrication hole is counterbored to accept an anti-rotational pin.
Bearing 495AS/493D Technical Data
Bearing Part 495AS/493D Bearing type: Double row tapered roller bearing Brand TIMKEN Other Inch type Inner(Cone) 495AS Dynamic C1 269000N Outer(Cup) 493D Factors e 0.44 Bore (d) 77.788mm Factors Y 1.52 O.D (D) 136.525mm Dynamic C90 40000N Width(T) 69.85mm Dynamic Ca90 30500N Dynamic C90(2) 69700N Factors K 1.31 Outer Ring Width(C) 53.975mm Factors Y2 2.26N Origin USA Weight: 3.99kg
Timken 495AS/493D Drawing
To know more information about TIMKEN 495AS/493D, Please visit http://www.bearingsift.com/timken-495as-493d/
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TIMKEN 495/493D Bearing stocks in China
TIMKEN 495/493D
Double Row TIMKEN 495/493D Inch Tapered Roller Bearing
TIMKEN 495/493D consists of a single-piece (double)
outer ring 493D and two single inner ring 495.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 495/493D can be used at fixed positions or allowed to fl oat in the housing bore to compensate for shaft expansion.
D suffi x has a groove with oil holes for lubrication through the outer ring
CD suffi x now replaces the DC suffi x listed for part numbers in previous publications. Same features as D suffi x, but CD also has groove with oil holes. One lubrication hole is counterbored to accept an anti-rotational pin.
Bearing 495/493D Technical Data
Bearing Part 495/493D Bearing type: Double row tapered roller bearing Brand TIMKEN Other Inch type Inner(Cone) 495 Dynamic C1 269000N Outer(Cup) 493D Factors e 0.44 Bore (d) 82.55mm Factors Y 1.52 O.D (D) 136.525mm Dynamic C90 40000N Width(T) 69.85mm Dynamic Ca90 30500N Dynamic C90(2) 69700N Factors K 1.31 Outer Ring Width(C) 53.975mm Factors Y2 2.26N Origin USA Weight: 3.63kg
Timken 495/493D Drawing
To know more information about TIMKEN 495/493D, Please visit http://www.bearingsift.com/timken-495-493d/
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TIMKEN 495/493D Bearing stocks in China
TIMKEN 495/493D
Double Row TIMKEN 495/493D Inch Tapered Roller Bearing
TIMKEN 495/493D consists of a single-piece (double)
outer ring 493D and two single inner ring 495.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 495/493D can be used at fixed positions or allowed to fl oat in the housing bore to compensate for shaft expansion.
D suffi x has a groove with oil holes for lubrication through the outer ring
CD suffi x now replaces the DC suffi x listed for part numbers in previous publications. Same features as D suffi x, but CD also has groove with oil holes. One lubrication hole is counterbored to accept an anti-rotational pin.
Bearing 495/493D Technical Data
Bearing Part 495/493D Bearing type: Double row tapered roller bearing Brand TIMKEN Other Inch type Inner(Cone) 495 Dynamic C1 269000N Outer(Cup) 493D Factors e 0.44 Bore (d) 82.55mm Factors Y 1.52 O.D (D) 136.525mm Dynamic C90 40000N Width(T) 69.85mm Dynamic Ca90 30500N Dynamic C90(2) 69700N Factors K 1.31 Outer Ring Width(C) 53.975mm Factors Y2 2.26N Origin USA Weight: 3.63kg
Timken 495/493D Drawing
To know more information about TIMKEN 495/493D, Please visit http://www.bearingsift.com/timken-495-493d/
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TIMKEN HM212049/HM212010 Bearing stocks in China
TIMKEN HM212049/HM212010
Single Row TIMKEN HM212049/HM212010 Inch Tapered Roller Bearing
TIMKEN HM212049/HM212010 is a widely used tapered roller bearing. and it is one of the widest possible choice from the comprehensive range of metric and inch sizes available.
Consult your Timken engineer about TIMKEN HM212049/HM212010 before making a
final bearing selection to help ensure suitability,availability and the most cost-effective solution.
Bearing HM212049/HM212010 Technical Data
Bearing Part HM212049/HM212010 Bearing type: Sinlge row tapered roller bearing Brand: TIMKEN Other Inch type Inner(Cone) HM212049 Dynamic C1 267000N Outer(Cup) HM212010 Factors e 0.34 Bore (d) 66.675mm Factors Y 1.78 O.D (D) 122.238mm Dynamic C90 69200N Width(T) 38.1mm Dynamic Ca90 40000N Width(B) 38.354mm Factors K 1.73 Width(C) 29.718mm Static C0 279000N Eff.Ctr.a -10.9mm Weight: 1.85kg
Timken HM212049/HM212010 Drawing
To know more information about TIMKEN HM212049/HM212010, Please visit http://www.bearingsift.com/timken-hm212049-hm212010/
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TIMKEN HM212047/HM212011 Bearing stocks in China
TIMKEN HM212047/HM212011
Single Row TIMKEN HM212047/HM212011 Inch Tapered Roller Bearing
TIMKEN HM212047/HM212011 is a widely used tapered roller bearing. and it is one of the widest possible choice from the comprehensive range of metric and inch sizes available.
Consult your Timken engineer about TIMKEN HM212047/HM212011 before making a
final bearing selection to help ensure suitability,availability and the most cost-effective solution.
Bearing HM212047/HM212011 Technical Data
Bearing Part HM212047/HM212011 Bearing type: Sinlge row tapered roller bearing Brand: TIMKEN Other Inch type Inner(Cone) HM212047 Dynamic C1 267000N Outer(Cup) HM212011 Factors e 0.34 Bore (d) 63.5mm Factors Y 1.78 O.D (D) 122.238mm Dynamic C90 69200N Width(T) 38.1mm Dynamic Ca90 40000N Width(B) 38.354mm Factors K 1.73 Width(C) 29.718mm Static C0 279000N Eff.Ctr.a -10.9mm Weight: 1.94kg
Timken HM212047/HM212011 Drawing
To know more information about TIMKEN HM212047/HM212011, Please visit https://www.bearingsift.com/timken-hm212047-hm212011/
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TIMKEN HM212049X/HM212010 Bearing stocks in China
TIMKEN HM212049X/HM212010
Single Row TIMKEN HM212049X/HM212010 Inch Tapered Roller Bearing
TIMKEN HM212049X/HM212010 is a widely used tapered roller bearing. and it is one of the widest possible choice from the comprehensive range of metric and inch sizes available.
Consult your Timken engineer about TIMKEN HM212049X/HM212010 before making a
final bearing selection to help ensure suitability,availability and the most cost-effective solution.
Bearing HM212049X/HM212010 Technical Data
Bearing Part HM212049X/HM212010 Bearing type: Sinlge row tapered roller bearing Brand: TIMKEN Other Inch type Inner(Cone) HM212049X Dynamic C1 267000N Outer(Cup) HM212010 Factors e 0.34 Bore (d) 66.675mm Factors Y 1.78 O.D (D) 122.238mm Dynamic C90 69200N Width(T) 38.1mm Dynamic Ca90 40000N Width(B) 38.354mm Factors K 1.73 Width(C) 29.718mm Static C0 279000N Eff.Ctr.a -10.9mm Weight: 1.84kg
Timken HM212049X/HM212010 Drawing
To know more information about TIMKEN HM212049X/HM212010, Please visit http://www.bearingsift.com/timken-hm212049x-hm212010/
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TIMKEN HM212047/HM212010 Bearing stocks in China
TIMKEN HM212047/HM212010
Single Row TIMKEN HM212047/HM212010 Inch Tapered Roller Bearing
TIMKEN HM212047/HM212010 is a widely used tapered roller bearing. and it is one of the widest possible choice from the comprehensive range of metric and inch sizes available.
Consult your Timken engineer about TIMKEN HM212047/HM212010 before making a
final bearing selection to help ensure suitability,availability and the most cost-effective solution.
Bearing HM212047/HM212010 Technical Data
Bearing Part HM212047/HM212010 Bearing type: Sinlge row tapered roller bearing Brand: TIMKEN Other Inch type Inner(Cone) HM212047 Dynamic C1 267000N Outer(Cup) HM212010 Factors e 0.34 Bore (d) 63.5mm Factors Y 1.78 O.D (D) 122.238mm Dynamic C90 69200N Width(T) 38.1mm Dynamic Ca90 40000N Width(B) 38.354mm Factors K 1.73 Width(C) 29.718mm Static C0 279000N Eff.Ctr.a -10.9mm Weight: 1.94kg
Timken HM212047/HM212010 Drawing
To know more information about TIMKEN HM212047/HM212010, Please visit http://www.bearingsift.com/timken-hm212047-hm212010/
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