The Nitto Kohki Super Cupla is a low-pressure quick-release coupling in steel with NBR seals for operating pressures up to 19 bar, and one of the most widely used coupling series in the Nitto Kohki range. The range covers plugs (0xP) and sockets (0xS) in two nominal sizes (01 and 02), with connections including G external thread (H), G internal thread (N, F), metric (M), and direct hose fittings for 6 mm and 8 mm (PC, PCL, SCB). The series is structurally compatible with the Small Cupla and offers a broad range of thread connection options.
⚙Steel with NBR - Standard material for general compressed air up to 19 bar, proven resistance to mineral oils
↕Nominal sizes 01 and 02 - Two bore diameter classes, compatible with Small Cupla and widely established on the market
✓Wide connection range - G external (H), G internal (F, N), metric (M), hose 6/8 mm (PC, PCL, SCB, S20P)
⬡Comprehensive type variety - 23 types cover all common line terminations in standard compressed-air installations
Type (selection)
Role
Connection
Material
02PH / 01PN / 02PN
Plug
G external, nipple
Steel/NBR
01PM / 02PM
Plug
G external (metric)
Steel/NBR
02PFF
Plug
G internal flat face
Steel/NBR
02PC-6 / 02PC-8
Plug
Hose 6/8 mm
Steel/NBR
02SH / 01SN / 02SN
Socket
G external, nipple
Steel/NBR
02SM / 02SF / 02SMF
Socket
Metric, G internal
Steel/NBR
02SC-6 / 02SC-8
Socket
Hose 6/8 mm
Steel/NBR
Typical applications: Compressed-air supply to hand tools (wrenches, grinders, riveting tools), general workshop and production pneumatics, hose reel and whip-end connections, pneumatic machines in assembly and packaging lines, and portable compressed-air installations up to 19 bar.
Not suitable for vacuum application in either connected or disconnected condition.
Size range
Thread: 1/8 inch, 1/4 inch. Hose barb: 1/4 inch, urethane hose ø5 x ø8, ø6.5 x ø10. Tube barb (Tube fitter): outside dia. ø6 and ø8
Catalogue page
C01en-b, 37
Operating principle
On disconnection the valve in the socket closes the supply line. The fluid left in the plug escapes.Connecting sequence of a ball locking quick connect coupling.
Light, compact for air piping connections
The lightweight design is suitable for power tools!
Push-to-connect for easy operation.
Lightweight design suits direct connection to power tools. Aluminum body is adopted for some models to reduce the weight.
Just push the plug into socket for easy one hand connection.
Available in various end configurations for a wide range of pneumatic applications.
Model 02S20P can be connected with sockets of HI CUPLA Models 10, 17, 20, 30, 40 and 60.
Also available with quick connect/disconnect Tube Fitter type.
All models of the series
02PH - Hose barb
Model
Coupling part
Application
Total (g)
02PH
Plug
1/4 inch hose
16
PN - For connection to urethane hose
Model
Coupling part
Application
Total (g)
L
C
øH(WAF)
øøB
øøBp
øøD
01PN
Plug
ø5 mm x ø8 mm hose
35.9
(38.5)
15
Hex.17
3.8
6
18.5
02PN
Plug
ø6.5 mm x ø10 mm hose
35.3
(38.5)
15
Hex.17
5.3
6
18.5
PM - Male thread
Model
Coupling part
Application
Total (g)
L
C
T
øH(WAF)
øøB
øøBp
øøD
01PM
Plug
Rc 1/8
12
31
15
R 1/8
Hex.12
5
6
-
02PM
Plug
Rc 1/4
22.7
34
15
R 1/4
Hex.17
6
6
18.5
02PFF - Parallel female thread
Model
Coupling part
Application
Total (g)
02PFF
Plug
G 1/4
17.7
PC - With Tube Fitter
Model
Coupling part
Application
Total (g)
L
C
øE
øH(WAF)
øøB
øøD
øøT
02PC-6
Plug
6 mm OD tube
28.5
(40.5)
15
18.5
Hex.17
6
18.5
10.3
02PC-8
Plug
8 mm OD tube
33
(47.5)
15
18.5
Hex.17
6
18.5
13.5
PCL - With L-shaped Tube Fitter
Model
Coupling part
Application
Total (g)
L
C
øE
øH(WAF)
øøB
øøD
øøT
02PCL-6
Plug
6 mm OD tube
29.5
(43)
15
(25.3)
Hex.17
6
18.5
10.5
02PCL-8
Plug
8 mm OD tube
34.5
(46.5)
15
(32.3)
Hex.17
6
18.5
13.5
02S20P - Conversion model to connect HI CUPLA socket
Model
Coupling part
Application
Total (g)
02S20P
plug/socket
HI CUPLA (Socket)
58
02SH - Hose barb
Model
Coupling part
Application
Total (g)
02SH
Socket
1/4 inch hose
56
SN - For connection to urethane hose
Model
Coupling part
Application
Total (g)
L
øH(WAF)
øøB
øøD
01SN
Socket
ø5 mm x ø8 mm hose
45.8
(54.5)
Hex.17
3.8
19.5
02SN
Socket
ø6.5 mm x ø10 mm hose
44.4
(54.5)
Hex.17
5.3
19.5
SM - Male thread
Model
Coupling part
Application
Total (g)
02SM
Socket
Rc 1/4
57
02SF - Female thread
Model
Coupling part
Application
Total (g)
02SF
Socket
R 1/4
56.4
02SMF - Parallel male thread
Model
Coupling part
Application
Total (g)
02SMF
Socket
G 1/4
27
SC - With Tube Fitter
Model
Coupling part
Application
Total (g)
L
øøD
øøT
02SC-6
Socket
6 mm OD tube
46
(65.5)
19.5
10.5
02SC-8
Socket
8 mm OD tube
50.5
(70)
19.5
13.5
SCL - With L-shaped Tube Fitter
Model
Coupling part
Application
Total (g)
L
C
øH(WAF)
øøD
øøT
02SCL-6
Socket
6 mm OD tube
47.5
(63.5)
(25.7)
Hex.16
19.5
10.3
02SCL-8
Socket
8 mm OD tube
49.5
(67.7)
(32.8)
Hex.16
19.5
13.5
SCB - With Tube Fitter for panel mounting
Model
Coupling part
Application
Total (g)
L
øF
øH(WAF)
øHs(WAF)
øøD
øøJ
02SCB-6
Socket
6 mm OD tube
58.5
(71.5)
7 or less
Hex.15
Hex.17
18
12.5 +0.3/0
02SCB-8
Socket
8 mm OD tube
60.4
(72)
8 or less
Hex.18
Hex.17
21
15.5 +0.3/0
Dimensions in millimetres. Values in brackets apply in the connected condition.
Legend: L = overall length; H = width across flats or outside dimension; D = socket outside diameter; A = hose barb length; C = sleeve dimension; T = thread or barb size; B = bore
Series comparison
Series
Max working pressure
Size range
Valve structure
Applicable fluids
SUPER CUPLA
10 bar
Thread: 1/8 inch, 1/4 inch. Hose barb: 1/4 inch, urethane hose ø5 x ø8, ø6.5 x ø10. Tube barb (Tube fitter): outside dia. ø6 and ø8
One-way shut-off
Air
COMPACT CUPLA
10 bar
Thread 1/8 inch; tube barb for ø4 x ø6 and ø6 x ø8 tube
Two-way shut-off
Air, Water
CUBE CUPLA
10 bar
4 mm and 6 mm ID tube, 1/8 inch
Two-way shut-off, one-way shut-off or straight through, depending on the combination of valved and valveless socket and plug.
Air, Water
FULL BLOW CUPLA
15 bar
Thread and hose barb 1/4 inch, 3/8 inch, 1/2 inch. SN type for urethane hose: for dia. 6.5 mm x dia. 10 mm, dia. 8 mm x dia. 12 mm, dia. 8.5 mm x dia. 12.5 mm and dia. 11 mm x dia. 16 mm polyurethane hose.
Thread and hose barb 1/4 inch, 3/8 inch; PN, SN, PNG and SNG types for ø5 mm x ø8 mm, ø6 mm x ø9 mm, ø6.5 mm x ø10 mm, ø8 mm x ø12 mm and ø8.5 mm x ø12.5 mm polyurethane hose
One-way shut-off
Air, Water
HI CUPLA
15 bar
Thread and hose barb 1/8 inch to 1 inch, 1/4 inch to 1 inch hose
One-way shut-off
Air, Water
LEVER LOCK CUPLA
18 bar
Metal body: 3/4 inch to 4 inch. Plastic body: 3/4 inch, 1 inch, 1 1/2 inch, 2 inch, 3 inch.
Straight through
Water, Hydraulic oil, Air, Powder, Steam
SUPER CUPLA suits air piping up to 1.0 MPa {10 kgf/cm2} where the coupling hangs directly on a power tool and weight matters: the 19.5 mm outside diameter sleeve, the steel or aluminum alloy body and one hand push-to-connect are its argument against COMPACT CUPLA and CUBE CUPLA, which are two-way shut-off at the same 1.0 MPa {10 kgf/cm2} and are chosen when the line has to close on both sides. Its end configurations cover hose barb, urethane hose, threads and Tube Fitters in 1/8 inch and 1/4 inch, and model 02S20P lets it work against HI CUPLA sockets. For air lines rated 1.5 MPa {15 kgf/cm2}, HI CUPLA, HI CUPLA 200, FULL BLOW CUPLA or LINE CUPLA 200 are the correct range, and fluids other than air fall outside the air-only rating of SUPER CUPLA.
Body and seal materials
Body material
CUPLA : Steel (Chrome plated)
CUPLA : Aluminum alloy
Tube Fitter Part : Brass (Nickel plated)
Tube Fitter Part : Plastic
Seal material
Mark
Working temperature
Remarks
Nitrile rubber (NBR)
-
-20 to +80 deg C
-
Further catalogue data
Note
Value
Maximum tightening torque, thread 1/8 inch
7 Nm {71 kgf-cm}
Maximum tightening torque, thread 1/4 inch
14 Nm {143 kgf-cm}
Tightening torque range, PN Type and SN Type
9 to 11 Nm {92 to 112 kgf-cm}
Flow direction
Fluid flow can be bi-directional when socket and plug are connected.
Minimum cross-sectional area (mm2), socket 02SC-6/02SCL-6/02SCB-6
11.3 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5
Minimum cross-sectional area (mm2), socket 02SC-8/02SCL-8/02SCB-8
11.3 | 12.5 | 19 | 19 | 19 | 19
Minimum cross-sectional area (mm2), socket 02SH
11.3 | 12.5 | 19 | 19.6 | 19.6 | 19.6
Minimum cross-sectional area (mm2), socket 02SN
11.3 | 12.5 | 19 | 19.6 | 22 | 22
Minimum cross-sectional area (mm2), socket 02SM/02SF/02SMF
11.3 | 12.5 | 19 | 19.6 | 22 | 28.2
Minimum cross-sectional area (mm2), socket 02S20P
11.3 | 12.5 | 19 | 19.6 | 22 | 28.2
Flow rate
Pressure - Flow Characteristics chart on page 38. [Test conditions] -Fluid : Air -Tube size : ø6 mm x ø4 mm, ø8 mm x ø6 mm (SUPER CUPLA with Tube Fitter). Curves plotted: 02SM x 02PM, 02SC-8 x 02PC-8, 02SM x 01PM, 02SCL-8 x 02PCL-8, 02SC-6 x 02PC-6, 02SCL-6 x 02PCL-6. Flow rate in m3/min (ANR) against pressure in MPa {kgf/cm2}, 0 to 0.7 MPa {7 kgf/cm2}.
Interchangeability and size groups
Sockets and plugs can be connected regardless of end configurations and sizes. Interchangeable with MOLD CUPLA (Models K-01P, K-02SP, K-03SP and K-90SN are named on the page). Sockets of HI CUPLA models 10, 17, 20, 30, 40, and 60 can be connected when 02S20P is used.
Safety and application notes
Before use, please be sure to read "Safety Guide" described at the end of this book and "Instruction Sheet" that comes with the products.
To mount on urethane hose, slide it over to the hose barb and tighten the nut until it is flush against the hose barb base.
It is recommended that grease GRE-M1 is applied to the inside of the nut (threaded part and hose contact part) for easy tightening.
All technical data on this page is taken from the Nitto Kohki general catalogue Quick Connect Couplings C01en-b, page 37. The complete catalogue is available for download on this page.
