D4B-@N
Top Plunger
Top Roller Plunger
D4B-@@70N
D4B-@@71N
12.7 dia. × 4.8
stainless steel roller
PT
16
Four, M3.5 × 19.5
head
mounting screws
16
Four, M3.5 × 19.5
head
mounting screws
9.2 dia.
PT
9.2 dia.
Stainless steel
plunger
OP
20
OP
20
Two, 5.3-dia.
Two, 5.3-dia.
mounting holes
mounting holes
97
97
77
74
60 0.2
Two, M4 × 12 cover
mounting screws
60 0.2
8
Two, M4 × 12 cover
mounting screws
77
74
Cover
Cover
7.3
7.3
8
5.3
15
31.5
43
Conduit opening
5.3
15
31.5
43
Conduit opening
30 0.2
30 0.2
40+1
40+1
0
0
Note: Unless otherwise specified, a tolerance of 0.4 mm applies to all dimensions.
Operating characteristics
Model
D4B-@@70N
18.63 N
1.96 N
2 mm
D4B-@@71N
18.63 N
1.96 N
2 mm
Operating force
Release force
Pretravel
OF max.
RF min.
PT max.
Note: Variation occurs in the simultaneity of
contact opening/closing operations of
2NC contacts. Check contact
operation.
*1. Only for slow-action models.
*2. Only for snap-action models.
*3. Reference values.
PT (2nd) *1 *3
(3 mm)
5 mm
1 mm
3.2 mm
49.03 N
(7 mm)
(3 mm)
5 mm
1 mm
3.2 mm
49.03N
(7 mm)
Overtravel
OT min.
Movement differential MD max. *2
Direct opening travel
Direct opening force
Total travel
DOT min. *4
DOF min. *4
TT *3
*4. Must be provided to ensure safe
operation.
Free position
Operating position
FP max.
OP
38 mm
35 1 mm
51 mm
48 1 mm
Coil Spring (Non-directional) *2
D4B-@@81N
Plastic Rod (Non-directional) *2
D4B-@@87N
Plastic rod
Stainless steel coil spring
The Switch can be
The Switch can be
actuated in any
direction except to
the axis center.
actuated in any
direction except to
the axis center.
(40) *1
(40) *1
6.6 dia.
6.6 dia.
15.7 16
15.7 16
18.2 dia.
29.1
18.2 dia.
Seal cap
Seal cap
2.7
77
2.7
77
Four, M3.5 × 7
head mounting
screws
203.5 1.2
203.5 1.2
29.1
Four, M3.5 × 7
mounting screws
Two, 5.3-dia.
mounting holes
Two, 5.3-dia.
mounting holes
60 0.2
8
Two, M4 × 12 cover
mounting screws
60 0.2
74
74
Two, M4 × 12 cover
mounting screws
Cover
7.3
7.3
8
Cover
5.3
15
5.3
30 0.2
15
Conduit
Conduit
opening
opening
30 0.2
31.5
43
31.5
43
40+1
40+1
0
0
Note: Unless otherwise specified, a tolerance of 0.4 mm applies to all dimensions.
*1. Be sure to adjust the dog to within 40 mm from the top end of the coil spring.
*2. In terms of construction, the Switch is a General-purpose Limit Switch rather than a Safety Limit Switch.
Operating characteristics
Model
D4B-@@81N
D4B-@@87N
Note: Variation occurs in the simultaneity of
contact opening/closing operations of
2NC contacts. Check contact
operation.
Operating force
Pretravel
OF max.
PT max.
1.47 N
15°
1.47 N
15°
10
OMRON [ OMRON ELECTRONICS LLC ]
