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  • Flanged Shaft Coupling

Flexible Flanged Shaft Coupling

FCL

Safety PrecautionsDesign Documents

RoHS Compliant

FCL/FCL-FL/FCLS/FCLS-FL/FCL-BOLTSET/FCL-BUSH_CFlexible Flanged Shaft Coupling

Dimension Drawing

FCLFlexible Flanged Shaft Coupling寸法図

FCLFlexible Flanged Shaft Coupling寸法図

Specs/CAD

Unit : mm

Part Number A Prepared hole diameter L C1 C2 B F1 F2 n
（item）		 a M t Bolt
Draft		 Coupling bolt
Part Number		 Bolt Set
Tightening torque(N・m)		 Price
(USD)		 CAD
Download		 Add to Cart
FCL-90 90 - 28 35.5 35.5 60 14 14 4 8 19 3 50 F1 11 - CAD RFQ
FCL-100 100 - 35.5 42.5 42.5 67 16 16 4 10 23 3 56 F2 22 - CAD RFQ
FCL-112 112 - 40 50 50 75 16 16 4 10 23 3 56 F2 22 - CAD RFQ
FCL-125 125 - 45 56 50 85 18 18 4 14 32 3 64 F3 39 - CAD RFQ
FCL-140 140 - 50 71 63 100 18 18 6 14 32 3 64 F3 39 - CAD RFQ
FCL-160 160 - 56 80 80 115 18 18 8 14 32 3 64 F3 39 - CAD RFQ
FCL-180 180 - 63 90 90 132 18 18 8 14 32 3 64 F3 39 - CAD RFQ
FCL-200 200 18 71 100 100 145 22.4 22.4 8 20 41 4 85 F4 190 - CAD RFQ
FCL-224 224 18 80 112 112 170 22.4 22.4 8 20 41 4 85 F4 190 - CAD RFQ
FCL-250 250 20 90 125 125 180 28 28 8 25 51 4 100 F5 330 - CAD RFQ
FCL-280 280 30 100 140 140 200 28 40 8 28 57 4 116 F6 330 - CAD RFQ
FCL-315 315 30 112 160 160 236 28 40 10 28 57 4 116 F6 330 - CAD RFQ
FCL-355 355 30 125 180 180 260 35.5 56 8 35.5 72 5 150 F7 650 - CAD RFQ
FCL-400 400 48 125 200 200 300 35.5 56 10 35.5 72 5 150 F7 650 - CAD RFQ
FCL-450 450 58 140 224 224 355 35.5 56 12 35.5 72 5 150 F7 650 - CAD RFQ
FCL-560 560 78 160 250 250 450 35.5 56 14 35.5 72 5 150 F7 650 - CAD RFQ
FCL-630 630 90 180 280 280 530 35.5 56 18 35.5 72 5 150 F7 650 - CAD RFQ
FCL-710B 710 110 224 315 315 600 56 56 24 35.5 72 5 174 F7L 650 - CAD RFQ
FCL-711B 710 120 250 355 355 580 80 80 20 45 87 7 240 F8 1800 - CAD RFQ
FCL-800B 800 130 265 375 375 670 80 80 22 45 87 7 240 F8 1800 - CAD RFQ

Part Number Max. Bore Diameter＊1
(mm)		 Maximum Torque (N・m) Max. Rotational Frequency
(min-1)		 Moment of Inertia ＊2
(kg・m2)		 Max. Eccentricity
(mm)		 Max. Angular
Misalignment
(°)		 Max. End-Play
(mm)		 Mass＊3
(kg)
D1 D2
FCL-90 20 20 15 4000 1.4×10-3 0.1 1/6 ±2.1 1.55
FCL-100 25 25 29 4000 2.4×10-3 0.1 1/6 ±2.1 2.32
FCL-112 28 28 33 4000 3.9×10-3 0.1 1/6 ±2.1 3.10
FCL-125 32 28 73 4000 6.6×10-3 0.1 1/6 ±2.1 4.18
FCL-140 38 35 130 4000 1.1×10-2 0.2 1/6 ±2.1 5.80
FCL-160 45 45 200 4000 1.9×10-2 0.2 1/6 ±2.1 8.22
FCL-180 50 50 230 3500 3.1×10-2 0.2 1/6 ±2.1 11.1
FCL-200 56 56 440 3200 6.2×10-2 0.2 1/6 ±2.8 16.6
FCL-224 63 63 510 2850 9.9×10-2 0.2 1/6 ±2.8 22.0
FCL-250 71 71 850 2550 1.9×10-1 0.2 1/6 ±2.8 32.2
FCL-280 80 80 1500 2300 3.3×10-1 0.3 1/6 ±2.8 45.0
FCL-315 90 90 2200 2050 5.4×10-1 0.3 1/6 ±2.8 61.4
FCL-355 100 100 3500 1800 1.1 0.3 1/6 ±3.5 94.7
FCL-400 110 110 5000 1600 1.8 0.3 1/6 ±3.5 118
FCL-450 125 125 7100 1400 3 0.3 1/6 ±3.5 157
FCL-560 140 140 10000 1150 7 0.3 1/6 ±3.5 238
FCL-630 160 160 16000 1000 11 0.3 1/6 ±3.5 316
FCL-710B 180 180 25000 900 22 0.3 1/6 ±3.5 492
FCL-711B 200 200 34000 900 29 0.3 1/6 ±4.9 683
FCL-800B 210 210 45000 800 52 0.3 1/6 ±4.9 855

＊1： This product has unprocessed bores.
Please take advantage of our convenient coupling modification service.
Orders for modification services can be made by email or fax.
＊2：　These are values with max. bore diameter.
＊3：　These are pilot hole values.

Part Number
Amount
Price（＄）

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Material/Finish

FCL FCLS
Joint
Main Unit		 FC200 or more S25C or more
Nut Equivalent to SS400
Trivalent Chromate Treatment		 Equivalent to SS400
Trivalent Chromate Treatment
Spring Lock
Washers		 SWRH62
Trivalent Chromate Treatment		 SWRH62
Trivalent Chromate Treatment
Bushing NBR
B (12) -j1a1〔HS (JIS A)＝70〕		 NBR
B (12) -j1a1〔HS (JIS A)＝70〕
Washer Equivalent to SS400
Trivalent Chromate Treatment		 Equivalent to SS400
Trivalent Chromate Treatment
Bolt Equivalent to SS400
Trivalent Chromate Treatment		 Equivalent to SS400
Trivalent Chromate Treatment

Characteristics

  • The most popular flexible shaft coupling in Japan that is compliant with JIS B 1452-1991 "Flexible Flanged Shaft Couplings".
  • Simple structure comprised of a flange and coupling bolts. Easy-to-mount.
  • Bushings can be replaced just by removing coupling bolts. This makes maintenance and service easy.
  • While it absorbs misalignment such as eccentricity and argument, it prevents noise by absorbing torsional vibration. It will not transmit thrust load, either.
  • Two types are available: Cast Iron FCL and Carbon Steel FCLS.
  • Please refer to the product page for the details of bolt set FCL-BOLTSET. FCL-BOLTSET

Product Standard

The product standard of the flexible flanged shaft couplings is compliant with JIS B 1452-1991 "Flexible Flanged Shaft Couplings".

Allowable value of the run-out of the joint outer diameter to the shaft hole center, and that of the joint surface near the outer diameter

0.03mm

Allowance of the bolt hole pitch circle diameter and the bushing insertion hole pitch circle diameter, allowance of the pitch, and the run-out tolerance to the shaft bore center

Unit : mm

Pitch Circle Diameter Pitch Circle Diameter and
Pitch Allowance		 Pitch Circle Diameter
Run-out Tolerance
60 / 67 / 75 ±0.16 0.12
85 / 100 / 115 / 132 / 145 ±0.20 0.14
170 / 180 / 200 / 236 ±0.26 0.18
260 / 300 / 355 / 450 / 530 ±0.32 0.22
580 / 600 / 670 ±0.40 0.28

Dimensional allowance of each part of the joint

Unit : mm

Joint Outside Diameter A - g7
Bolt Hole and Bolt a H7 g7
Washer Inside Diameter＊1 a - 0～+0.4
Bushing Inside Diameter, Washer Inside Diameter
and Bolt Bushing Insertion Area Diameter a1		 0～+0.4 e9
Bushing Insertion Hole M H8 -
Bushing Outside Diameter p - -0.4～0
Bolt Bushing Insertion Area Length m - k12

＊1：　For those with the standard dimensions of 8, it is 0～+0.2.
Each symbol is identical to that shown in the Dimension/Performance table.

Bush width q dimensional allowance
Standard Dimension Allowance
14 / 16 / 18 ±0.3
22.4 / 28 / 40 -0.5～+0.1
56 / 80 -0.6～+0.2

For the allowable length tolerances of non-fitting part sections to be cut, refer to JIS B 0405 tolerance class m.

Washer thickness t dimensional allowance
Standard Dimension Allowance
3 -0.43～+0.03
4 ±0.29
5 ±0.4
7 ±0.5

Performance of the Bushing

Characteristics item NBR (Nitrile rubber)
Machine oil Excellent
Gasoline Excellent
Benzine Impossible
Ketone Impossible
Alcohol Excellent
Acid resistance Weak acid Good
Strong acid OK
Impact resilience Good
Abrasion resistance Excellent
Aging Resistance Excellent
Tensile strength Excellent
Heat resistance
(max. operating temperature, regular use)		 90℃
Cold resistance
(min. operating temperature, regular use)		 -20℃

Alignment Adjustment

  1. Although the flexible flanged shaft coupling permits misalignment and transmits torque, if the misalignment exceeds the allowable value, vibration may occur or the life may be rapidly shortened. Be sure to perform alignment adjustment.
  2. Shaft center misalignment includes eccentricity (parallel error of both shaft centers), argument (angle error of both shaft centers), and end-play (shaft direction movement of the shaft). Adjust the shaft alignment so that it will not exceed the allowable value listed in the Dimension/Performance table in this catalog.
  3. The allowable values of the misalignment listed in the Dimension/Performance table are for the case where any one of eccentricity, argument, and end-play occurs independently. Mixing of two or more misalignment causes each of the allowable values to be reduced to half.
  4. Misalignment may occur not only in assembling into the device but also due to vibration, thermal expansion, and shaft bearing abrasion during operation. Therefore, it is recommended to keep the misalignment one third of the allowable value or less.

Eccentricity, Parallel Offset Misalignment

FCL/FCL-FL/FCLS/FCLS-FL/FCL-BOLTSET/FCL-BUSH_CFlexible Flanged Shaft Coupling

Argument, Angular Misalignment

FCL/FCL-FL/FCLS/FCLS-FL/FCL-BOLTSET/FCL-BUSH_CFlexible Flanged Shaft Coupling

End-Play

FCL/FCL-FL/FCLS/FCLS-FL/FCL-BOLTSET/FCL-BUSH_CFlexible Flanged Shaft Coupling


Reference Material

Surface pressure of the bushing and the bending stress of the bolt

Joint Outside Diameter
A
(mm)		 Rated Torque
(N•m)		 Pitch Circle
Diameter
B
(mm)		 Number of
Bolts
n
(pc)		 Load per
Piece＊1
(N)		 Area in Bushing
q×a1
(mm2)		 Inner Periphery Pressure
P1
(MPa)		 Bushing
Width
q
(mm)		 Clearance
t
(mm)		 Arm
t+q/2
(mm)		 Bending
Moment
(N・m)		 Bolt
Diameter
a
(mm)		 Section Modulus
πa3/32
(mm3)		 Bending Stress
σ
(MPa)
90 4.9 60 4 82 14×09 0.65 14 3 10 0.82 8 50.3 16.2
100 9.8 67 4 146 16×12 0.76 16 3 11 1.61 10 98.2 16.4
112 15.7 75 4 209 16×12 1.09 16 3 11 2.30 10 98.2 23.4
125 24.5 85 4 288 18×16 1.00 18 3 12 3.46 14 269.4 12.8
140 49 100 6 327 18×16 1.13 18 3 12 3.92 14 269.4 14.6
160 110 115 8 478 18×16 1.66 18 3 12 5.74 14 269.4 21.3
180 157 132 8 595 18×16 2.06 18 3 12 7.14 14 269.4 26.5
200 245 145 8 845 22.4×22.4 1.68 22.4 4 15.2 12.8 20 785.4 16.4
224 392 170 8 1150 22.4×22.4 2.30 22.4 4 15.2 17.5 20 785.4 22.3
250 618 180 8 1720 28×28 2.19 28 4 18 30.9 25 1535 20.1
280 980 200 8 2450 40×32 1.94 40 4 24 58.8 28 2155 27.3
315 1570 236 10 2660 40×32 2.11 40 4 24 63.9 28 2155 29.6
355 2450 260 8 4710 56×40 2.10 56 5 33 155 35.5 4390 35.4
400 3920 300 10 5230 56×40 2.33 56 5 33 172 35.5 4390 39.3
450 6180 355 12 5800 56×40 2.59 56 5 33 191 35.5 4390 43.6
560 9800 450 14 6220 56×40 2.78 56 5 33 205 35.5 4390 46.8
630 15700 530 18 6580 56×40 2.94 56 5 33 217 35.5 4390 49.5
710B 24500 600 24 6810 56×40 3.04 56 5 33 225 35.5 4390 51.3
711B 33300 580 20 11500 80×50 2.88 80 7 47 541 45 8950 60.4
800B 45000 670 22 12200 80×50 3.05 80 7 47 573 45 8950 64.0

＊1：　The effective number of bolts is calculated as half of the actual number of bolts "n".


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