NBK logo

  • Couplings
  • Oldham Type

MOR-38CK-15-16

Flexible Coupling - Oldham - type - Clamping + Key type

  • High Torque
  • High Allowable Misalignment

Dimension Drawing

MOR-CKFlexible Coupling - Oldham - type - Clamping + Key type寸法図

Part Number ALWEFGM Screw Tightening
Torque (N・m)
Price
(USD)
CAD
Download
Add to Cart
MOR-38CK-15-16 38 12.1 40.1 20.3 6 14.2 M5 4 104.86 CAD Cart

Part Number Max. Bore Diameter
(mm)
Rated
Torque*1
(N・m)
Max. Torque
*1(N・m)
Max. Rotational Frequency
(min-1)
Moment of
Inertia
(kg・m2)*2
Static
Torsional
Stiffness
(N・m/rad)
Max. Lateral Misalignment
(mm)
Max. Angular
Misalignment
(°)
Mass
(g) *2
MOR-38CK-15-16 20 28 56 16000 1.5×10-5 1500 2.5 3 64

*1: Values with no load fluctuation and rotation in a single direction. If there is large load fluctuation, or both normal and reverse rotation, select a size with some margin. If ambient temperature exceeds 30°C, be sure to correct the rated torque and max. torque with temperature correction factor shown in the following table. The allowable operating temperature of MOR-CK is -20°C to 80°C.
*2: These are values with max. bore diameter.

Ambient Temperature / Temperature Correction Factor

Ambient Temperature Temperature Correction Factor
-20℃ to 30℃ 1.00
30℃ to 40℃ 0.80
40℃ to 60℃ 0.70
60℃ to 80℃ 0.55

Structure

Set Screw Type

MOR MOR

MOR/MOR-C/MOR-K/MOR-CK_CFlexible Couplings - Oldham Type

Clamping Type

MOR-C MOR-C

MOR/MOR-C/MOR-K/MOR-CK_CFlexible Couplings - Oldham Type

Set Screws + Key Type

MOR-K MOR-K

MOR/MOR-C/MOR-K/MOR-CK_CFlexible Couplings - Oldham Type

Clamping + Key Type

MOR-CK MOR-CK

MOR/MOR-C/MOR-K/MOR-CK_CFlexible Couplings - Oldham Type


Material/Finish

MOR-CK
Hub A2017
Anodized
Spacer Polyacetal
Hex Socket Set Screw SCM435
Ferrosoferric Oxide Film (Black)
Hex Socket Head Cap Screw SCM435
Ferrosoferric Oxide Film (Black)

Characteristics

  • Applicable Motor
MOR
Servomotor -
Stepping Motor -
General-purpose Motor

◎: Excellent ○: Very good

  • Property
MOR
High Torque
Allowable Misalignment
Small Eccentric Reaction Force
Electrical Insulation
Allowable Operating Temperature -20℃ to 80℃

◎: Excellent ○: Very good

  • This is an oldham type flexible coupling.
  • Slippage of hubs and a spacer allows large eccentricity and angular misalignment to be accepted.
  • The eccentric reaction generated by misalignment is small and the burden on the shaft is reduced.
  • The simple structure allows the unit to be easily assembled.

Application

Sputtering device / Parts feeder / Industrial sewing machine / Amusement device

Precautions for Use

In case of mounting on D-cut shaft, be careful about the position of the D-cut surface of the shaft. ⇒Mounting and Maintenance
There are sizes where the hex socket head bolt exceeds the outer diameter of the coupling and the rotating diameter is larger than the outer diameter. Please be careful of the interference of coupling. Rotation Diameter


Selection

Selection Based on Shaft Diameter and Rated Torque

The area bounded by the shaft diameter and rated torque indicates the selection size.

MOR/MOR-C/MOR-K/MOR-CK_CFlexible Couplings - Oldham Type

MOR/MOR-C/MOR-K/MOR-CK_CFlexible Couplings - Oldham Type

Selection Example

In case of selected parameters of shaft diameter of φ 6 and load torque of 0.3 N•m, the selected size is MOR-15.

Details of Shaft Hole

MOR-CKFlexible Coupling - Oldham - type - Clamping + Key type

Metric Shaft Hole

Unit : mm

Standard Bore Diameter
D
Keyway Key
b t Nominal
Dimension
b x h
Standard
Dimension
Allowance
(JS9)
Standard
Dimension
Allowance
6 2 ±0.0125 1.0 0~+0.1 2 × 2
8 3 ±0.0125 1.4 0~+0.1 3 × 3
10・12 4 ±0.0150 1.8 0~+0.1 4 × 4
14・15・16 5 ±0.0150 2.3 0~+0.1 5 × 5
18・20・22 6 ±0.0150 2.8 0~+0.1 6 × 6
25・28・30 8 ±0.0180 3.3 0~+0.2 8 × 7
35 10 ±0.0180 3.3 0~+0.2 10 × 8

Excerpt from JIS B 1301

Inch Shaft Hole

Unit : inch

Standard Inch Bore Diameter
D
Keyway
Wk T
Standard
Dimension
Allowance Standard
Dimension
Allowance
1/2 1/8 0~+0.002 0.560 0~+0.01
5/8 3/16 0~+0.002 0.709 0~+0.01
3/4 3/16 0~+0.002 0.837 0~+0.01
7/8 3/16 0~+0.002 0.964 0~+0.01

Comparison of Rated Torque

MOR-CKFlexible Coupling - Oldham - type - Clamping + Key type


Chemical resistance of the spacer (Polyacetal)

Effect
Weather Resistance Slight Change in Color
Weak Acid Resistance Minor Effect
Strong Acid Resistance Effect
Weak Alkali Resistance Minor Effect
Strong Alkali Resistance Minor Effect
Organic Solvent Resistance Includes Resistance

Physical property of the spacer (Polyacetal)

Test Method unit Polyacetal
Density ISO 1183 g/cm3 1.36
Water Absorption
(23°C, Dipped for 24 hr)
ISO 62 % 0.7
Tensile Strength ISO 527-1, 2 N/mm2 52
Bending Strength ISO 178 N/mm2 72
Charpy Impact Strength
(with Notch)
ISO 179 / 1eA kJ/m2 5.9
Deflection Temperature Under Load
(1.8MPa)
ISO 75-1, 2 °C 85
Insulation Breakdown Strength
(3mmt)
IEC 60243-1 kV/mm 20
Volume Resistivity IEC 60093 Ω·cm 1 x 1014
Combustibility UL94 - HB

Eccentric Reaction Force

MOR/MOR-C/MOR-K/MOR-CK_TTechnical Information

These are initial slippage load values of hubs and a spacer.
After running-in operation, the slippage load becomes small, the load on the shaft due to misalignment becomes lowered, and the burden on the shaft bearing is reduced.

MOR/MOR-C/MOR-K/MOR-CK_TTechnical Information


Change in static torsional stiffness due to temperature

This is a value under the condition where the static torsional stiffness at 20°C is 100%.
Changes in the static torsion spring constant within the operating temperature are shown in the graph.
Before using the unit, be aware of the deterioration of responsiveness.

MOR/MOR-C/MOR-K/MOR-CK_TTechnical Information


Related Services

Product List

Click here to see MOR-38CK

Click here to see MOR-CK