Đại lý phân phối chính hãng NIPPON GEAR Việt Nam
Best for applications related to water supply and sewerage systems
Limitorque valve control
JMB series
The Limitorque JMB series valve actuators, based on the SMB series valve actuators with a lot of achievements, are equipped with an interlock switch that interrupts the electric circuit during manual operation.
In addition to the robust and highly accurate structures and enhanced control mechanism, the design with superior maintainability guarantees stable operation for a long time.
To meet the demands in a wide range of fields, we offer eight unit sizes and a wide variety of reduction ratios.

Application
– Water supply and sewerage systems, as well as thermal and hydropower plants, petroleum oil, chemical, ship, vessel, and papermaking.
– JMB actuators can be attached directly to multi-turn-type valves (such as hydraulic gates, gate valves, glove valves, and through gates).
– They can be attached to part-turn-type valves (such as butterfly valves, plug valves, and dampers) in combination with an actuator for part turn-type valves.

	Push-button switch
Unit size				JMB-04	JMB-03	JMB-00	JMB-0	JMB-1	JMB-2	JMB-3	JMB-4
Mechanism and specifications	Allowable torque N・m			110	250	360	1000	1500	2700	6100	11500
	Allowable thrust kN			35	49	62	105	200	320	620	1100
	Minimum and maximum stem diameter^*1 （mm）	Exterior thread	2PC	26以下	38以下	20-46	24-60	38-73	42-86	55-127	60-127
		Exterior thread	1PC	ー		45-51	60-70	73-83	86-98	127-146	127-171
		Interior thread	2PC Maximum keyway	20以下 6×2.8	32以下 10×3.3	20-36 10×3.3	25-47 14×3.8	30-60 18×4.4	35-70 20×4.9	35-100 28×6.4	45-110 28×6.4
		Interior thread	1PC Maximum keyway	25以下 8×3.3	38以下 10×3.3	25-44 12×3.3	35-58 16×4.3	45-67 20×4.9	50-80 22×5.4	70-120 32×7.4	90-152 40×9.4
	Output shaft rotation frequency(min^-1)^*2 (Standard reduction rate of electric type)		60Hz	15.1-48.3	15.4-49.4	14.7-69.5	16.2-59.0	18.1-58.8	19.4-68.6	15.4-44.6	12.8-30.9
			50Hz	12.7-40.8	13.0-41.7	12.4-58.6	13.7-49.7	15.3-49.6	16.4-57.8	13.0-37.6	10.8-26.1
	Reduction rate of manual type		JMB model (standard)	ー		45	38	34	33	<41/td>	49
	Reduction rate of manual type		JMB-H model (equipped with HWA)^*3	ー			38×3.2	34×3.6	33×3.9	41×5.5	49×6.75
	Attachable motor(kW)			0.2 0.4	0.2 0.4	0.4 0.75 1.5	0.75 1.5 2.2	1.5 2.2 3.7	3.7 5.5	5.5 7.5 11.0 15.0	11.0 15.0 18.5 22.0
	Attachable actuator			BA (Allowable thrust: 26 – 1,200 kN, for multi-turn-type valve) HB(Allowable torque: 0.83 – 200 kN·m, for part-turn-type valve) H (Allowable torque: 390 – 1,100 kN·m, for part-turn-type valve)
Electric and control specifications	Torque switch			JMB-04, 03: 1c in both opening and closing directions (microswitch type) JMB-00 to 4: 1a and 1b in both opening and closing directions (Rotary type)
	Geared limit switch			JMB-04, 03: 2 contacts (1a, 1b) x 2 lines (standard) JMB-00 to 4: 4 contacts (2a, 2b) x 2 lines (standard)
	Motor		Power supply	200 V AC class, 400 V AC class/50Hz, 60Hz 100 V DC class, 200 V DC class
			Insulation class	Class E (standard), class B, and class H (option)
			Rated time	30 minutes or 15 minutes (standard)
			Space heater	Option
	Indication light			Option
	Position transmitter
	Electromagnetic switch
	Proportional braking system
	Others
Protection type	Protection structure			Standard(IP55)