FB Series

Electrically Released Brakes – FB Series

Selection Procedure
FB (Shaft Mounted) Series brakes are available in three models to provide an optimum size to match your application requirements. Static torque capabilities range from 10.5 lb.ft. to 56 lb.ft.

Brakes on single shaft extension motors (see motor adapter bore size chart on page 136). For double shaft extension motors, the adapter can be eliminated. Specify motor shaft size.

Typical Application

Storage Elevator
These brakes will stop as well as keep a load in position until they are electrically
released. They are also used as emergency stopping devices

FB Series Electrically Released Brakes
Product Data – Reference (Pages 135-137) in catalog P-1234

FB Series Electrically Released Brakes

FB SERIES
Model No.	Voltage D.C.	Max RPM	Bore Size	Part No.
FB-375	24V	5000	1/2″	5390-170-024
FB-375	90V	5000	1/2″	5390-170-021
FB-375	24V	5000	5/8″	5390-170-023
FB-375	90V	5000	5/8″	5390-170-022
FB-475	24V	4500	1″	5391-170-012
FB-475	90V	4500	1″	5391-170-009
FB-650	24V	3600	1-3/8″	5392-170-010
FB-650	90V	3600	1-3/8″	5392-170-007

MOTOR ADAPTERS

Model Size	Motor Shaft Size	Part No.
375	.625″	5380-101-005
375	.875″	5380-101-004
475	1.125″	5381-101-003
650	1.375″	5382-101-003
650	1.625″	5382-101-002

FB Shaft Adapter

Shown below are dimensions and specifications for the optional shaft adapter available for mounting FB Series brakes on a motor. A standard sheave, pulley, or sprocket, with either a tapered bushing or straight bore, can be installed on the shaft adapter. The brake is mounted on the end of the shaft adapter and the complete assembly fits onto the motor shaft, secured with setscrews. Fitting the belts or chain and torque arm completes the installation.

FB SHAFT ADAPTER
Model No.	A	B	E	KEY Part No.
FB-375	5/8″	7/8″	2″	590-0016
FB-375	7/8″	1-1/4″	2-1/4″	590-0022
FB-475	1-1/8″	1-5/8″	2-3/4″	590-0041
FB-650	1-3/8″	2″	3-3/8″	590-0042
FB-650	1-5/8″	2-1/4″	4″	590-0042

FB SERIES – ELECTRICALLY RELEASED BRAKES
COMPONENT PARTS

Description	FB-375 Part No	FB-475 Part No	FB-650 Part No
*Bushing		180-0410 1/2″ bore	180-0421 1/2″ bore
		to 180-0418 1″ bore	To 180-0435 1-3/8″ bore
5/8″ motor shaft	5380-101-005
7/8″ motor shaft	5380-101-004
1-1/8″ motor shaft		5381-101-003
1-3/8″ motor shaft			5382-101-003
1-5/8″ motor shaft			5382-101-002
Retainer ring	748-0101	748-0102	748-0104
Ball bearing	166-0150	166-0110	166-0104
Retainer ring	748-0018	748-0002	748-0004
Torque arm mount assembly	5380-101-007	5381-101-006	5382-101-007
Torque arm rod assembly	5380-112-001	5381-112-001	5382-112-001
Terminal accessory	5311-101-001	5311-101-001	5311-101-001
Conduit Box	5200-101-010	5200-101-010	5200-101-010