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Precision Shaft Coupling - Correction Type UA-C Series (Part Numbers)

Precision Shaft Coupling - Correction Type UA-C Series
  • Volume Discount

[Features]
·High-rigidity body and double-bolt clamp specifications make it suitable for high-precision, high-response control.
· The pins placed like a cross on the center block and the metal that holds them on the hub arms slide and rotate freely to absorb eccentricity and angular misalignment at the same time. The clearance between the pin and the metal is as small as a few μm, enabling high-precision rotation transmission.
· The support reaction force generated when absorbing the misalignment is minimal due to the compensating structure in which the pin and metal part slide and rotate freely without any flexible material. In addition, the torsional rigidity is 1.5 to 2 times that of the leaf spring type, improving the control response of automatic equipment using servo motors, pulse motors, etc.
·Due to the unique damping property and high torsional rigidity of the correction type, the vibration of the drive unit is difficult to transmit to the driven part, so it is effective as a vibration countermeasure for the mounting equipment.
·Support reaction force is extremely small, so installation is easy.

PDF

Japanese Only

Drawing

Precision Shaft Coupling - Correction Type UA-C Series, Drawing

 

Specifications Table

Part numberAllowance
Torque
N⋅m
Maximum Torque
N⋅m
Allowable
thrust
load
N
Allowable eccentricity
mm
Allowable angular misalignment
°
Maximum rotational speed
[r/min]
Torsional
rigidity
N⋅m/rad.
Moment of
inertia
kg⋅m2
Weight
g
dABPLJCM
UA-15C0.250.5300.216,0000.29 x 1030.25 x 10-693 to 5151641863M2.5
UA-20C0.51.0600.216,0000.90 x 1030.90 x 10-6174-8202272073.5M3
UA-25C1.02.0800.216,0002.00 x 1032.99 x 10-6364-102527102794.5M4
UA-30C2.04.01400.216,0003.78 x 1036.74 x 10-6575-14303210309.54.7M4
UA-35C3.57.01800.216,0006.34 x 1031.36 x 10-5837 to 163537133511.55.7M5
UA-40C5.0103200.216,0001.06 x 1042.66 x 10-51238 to 204042154012.56.2M5
UA-45C10205000.216,0001.70 x 1040.47 x 10-41788 to 2245471645147M6
UA-55C20408500.216,0003.00 x 1041.35 x 10-435310 to 2555581758199.9M8

Standard shaft hole diameter: d

Part numberd
34566.35789.52510111214151617181920222425
UA-15CAvailableUsableUsable                  
UA-20C AvailableAvailableAvailableAvailableUsableUsable              
UA-25C AvailableAvailableAvailableAvailableAvailableAvailableUsableUsable            
UA-30C  AvailableAvailableAvailableAvailableAvailableUsableUsableUsableUsableUsable         
UA-35C     AvailableAvailableAvailableAvailableAvailableAvailableUsableUsableUsable       
UA-40C      AvailableAvailableAvailableAvailableAvailableAvailableUsableUsableUsableUsableUsableUsable   
UA-45C      AvailableAvailableAvailableAvailableAvailableAvailableAvailableUsableUsableUsableUsableUsableUsable  
UA-55C        AvailableAvailableAvailableAvailableAvailableAvailableUsableUsableUsableUsableUsableUsableUsable
  • UA-55C is a semi-standard product.
  • The allowable torque is for a rotational speed of 1,500r/min.
  • The maximum torque is the torque that can be instantaneously transmitted when starting and braking.
  • The allowable thrust load refers to the static allowable load when the load torque is zero.
  • Insert the mounting shaft securely up to the J dimension. In the case of a non-through hole diameter, the insertion dimension of the mounting shaft must not protrude beyond the J dimension.
  • Moment of inertia and weight are for the case with the largest shaft hole diameter.
  • The recommended shaft tolerance is h6.

Selection Support Information

(1) From the performance table, select a part number that has an allowable torque greater than the equivalent torque calculated by the formula below.

Precision Shaft Coupling - Correction Type UA-C Series, Selection support information related images

 

 
  • The correction coefficient is determined by multiplying each coefficient (K1 to K3) in Tables 1 to 3.
    K = K1 x K2 x K3
  • If forward/reverse rotation, starting/stopping, and shifting are frequently repeated, the value obtained by multiplying the starting torque by the correction factor shall be taken as the equivalent torque.

Velocity coefficient: K1

Normal rotational speed150018002500300036006000
(r/min)or lessor lessor lessor lessor lessor less
K111.21.72.02.44.0

Misalignment factor: K2

 Eccentricity (mm)
Angular misalignment (°)0.1 or less0.2 or less
0.5 or less1.53.0
1.0 or less2.04.0

Ambient temperature coefficient: K3

Temperature (℃)59 or less60 to 7980 to 100
K311.52.0

(2) Confirm that "required shaft hole diameter ≤ maximum shaft hole diameter of selected part number."

Part Number
UA-15C-3X3
UA-15C-3X4
UA-15C-3X5
UA-15C-4X4
UA-15C-4X5
UA-15C-5X5
UA-20C-4X4
UA-20C-4X5
UA-20C-4X6
UA-20C-4X7
UA-20C-4X8
UA-20C-5X5
UA-20C-5X6
UA-20C-5X7
UA-20C-5X8
UA-20C-6X6
UA-20C-6X7
UA-20C-6X8
UA-20C-7X7
UA-20C-7X8
UA-20C-8X8
UA-25C-5X5
UA-25C-5X6
UA-25C-5X6.35
UA-25C-5X7
UA-25C-5X8
UA-25C-5X9.525
UA-25C-5X10
UA-25C-6X6
UA-25C-6X6.35
UA-25C-6X7
UA-25C-6X8
UA-25C-6X9.525
UA-25C-6X10
UA-25C-6.35X6.35
UA-25C-6.35X7
UA-25C-6.35X8
UA-25C-6.35X9.525
UA-25C-6.35X10
UA-25C-7X7
UA-25C-7X8
UA-25C-7X9.525
UA-25C-7X10
UA-25C-8X8
UA-25C-8X9.525
UA-25C-8X10
UA-25C-9.525X9.525
UA-25C-9.525X10
UA-25C-10X10
UA-30C-6X6
UA-30C-6X7
UA-30C-6X8
UA-30C-6X10
UA-30C-6X11
UA-30C-6X12
UA-30C-6X14
UA-30C-7X7
UA-30C-7X8
UA-30C-7X10
UA-30C-7X11
UA-30C-7X12
UA-30C-7X14
UA-30C-8X8
UA-30C-8X10
UA-30C-8X11
UA-30C-8X12
UA-30C-8X14
UA-30C-10X10
UA-30C-10X11
UA-30C-10X12
UA-30C-10X14
UA-30C-11X11
UA-30C-11X12
UA-30C-11X14
UA-30C-12X12
UA-30C-12X14
UA-30C-14X14
UA-35C-8X8
UA-35C-8X10
UA-35C-8X11
UA-35C-8X12
UA-35C-8X14
UA-35C-8X15
UA-35C-8X16
UA-35C-10X10
UA-35C-10X11
UA-35C-10X12
UA-35C-10X14
UA-35C-10X15
UA-35C-10X16
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipRoHSAllowable Torque Range
(N•m)
d1(d)
(Ø)
d2
(Ø)
Outer Dia. A
(Ø)
Full length L (LL)
(mm)
Allowable Torque
(N•m)
Moment of Inertia
(kg・m2)
Max. Torque
(N·m)

MYR 195.10

1 Piece(s)Available 7 Day(s) or more 100.05 to 1.003315180.250.25X10-60.5

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MYR 291.68

1 Piece(s) 4 Day(s) or more 101.01 to 3.001212303026.74X10-64

MYR 291.68

1 Piece(s) 7 Day(s) or more 101.01 to 3.001214303026.74X10-64

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MYR 338.32

1 Piece(s) 4 Day(s) or more 103.01 to 5.0081235353.513.6X10-67

MYR 338.32

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MYR 338.32

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MYR 338.32

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MYR 338.32

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MYR 338.32

1 Piece(s) 7 Day(s) or more 103.01 to 5.00101535353.513.6X10-67

MYR 338.32

1 Piece(s) 7 Day(s) or more 103.01 to 5.00101635353.513.6X10-67

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Basic Information

Type Standard Type Max. Rotational Speed Range(r/min) 4001 to 10000 Features High torsional rigidity / Low Inertia Moment
Body Material A2017 Application Standard / Servo Motor / Pulse Motor / Encoder Max. Rotational Speed(r/min) 6000
Allowable Lateral Misalignment Range(mm) 0.02 to 0.2 Allowable Lateral Misalignment(mm) 0.2 Allowable Angular Misalignment(deg) 1

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