70 Series End Mount Diract 4 Post NEMA 2, Mark II Release

NEMA Frame Sizes 182TC through 256TC
Torque Ratings: 10 to 75 lb-ft
Base Models: 71010-89, 71015-89, 72025-89, 72035-89, 73050-89, 74075-89

Enclosure Type:

Dripproof Enclosure: NEMA 2, CSA 4, IP41
Cast iron enclosure
Red oxide primer paint

Specifications:

Reaction Time: 20-25 milliseconds (release and set)
AK: 8.50” Register
AJ: 7.25” Bolt Circle
Maximum RPM: 3600
CSA File: #LR13814
Coil insulation: Class B standard, Class H optional
Lead wires: external conduit and internal connections
Nameplate: Engraved stainless steel
Manual: BK4785

Design Features:

RoHS compliant
No disassembly required for mounting
Direct acting design with no linkages to break
Torque adjustable for specific applications
External Mark II manual release with automatic reset
One moving part for longer life
Splined hub
Spring set, electrically released

Brake Model Number Definition

Voltages:

Standard AC Voltages (single and three phase)

Suffix | Voltage
Y1 | 110/220V, 50Hz (single phase only)
11 | 115/208-230V, 60Hz (single phase only)
R1 | 115/230V, 60Hz (single phase only)
T1 or T3 | 220/440V, 60Hz
51 or 53 | 208-230/460V, 60Hz
U1 or U3 | 230/460V, 60Hz or 190/380V, 50Hz
P1 or P3 | 575V, 60Hz

Special Voltages Available

Standard Hub Bore Sizes:

Suffix | Size | Keyway
F | 7/8″ | 3/16″ x 3/32″
H | 1-1/8″ | 1/4″ x 1/8″
K | 1-3/8″ | 5/16″ x 5/32″
M | 1-5/8″ | 3/8″ x 3/16″

Special Bore Sizes Available

Available Options:

Suffix | Description
A | Adapter to Next larger Frame Size
AB | Reverse Adapter
B | Aluminum Bronze Stationary Disc(s)
E | Ductile Iron Stationary Disc(s)
F | Foot Mounting Bracket
H | Heavy Duty Friction Disc(s)
J | High Tensile Studs
M | Military Marine Finish
N | Non-Military (Maritime) Marine Finish
P | Tropical Protection
Q | Class H Insulation
R | Internal Space Heater
S | Stainless Steel Stationary Disc(s)
V | All Position Vertical Mounting
VO | Vertical Over Motor Mounting
VU | Vertical Under Motor Mounting
XS | Microswitch Warning

Downloads, Instructions & Parts Lists

Contact Factory

Torque (lb-ft)	Model #	Weight (lbs)	Thermal Capacity (HPS/Min)	Inertia (lb-ft2)	"C"	"N"	"X"	"AC"
10	71010-89	45	10	0.028	5.75	1.50	1.00	1.44
15	71015-89	45	10	0.028	5.75	1.50	1.00	1.44
25	72025-89	49	11	0.051	6.37	2.00	1.50	2.07
35	72035-89	49	11	0.051	6.37	2.00	1.50	2.07
50	73050-89	53	12	0.075	7.00	2.50	2.00	2.69
75	74075-89	58	13	0.099	7.62	3.00	2.50	3.31