TJX42RNb

Low noise 42mm gearbox 12 volt 24v 10rpm high torque low speed 85kg 70kgcm 11nm 40w dc planetary gear reducer motor with brake

Introduction

DC Planetary Gear Motor直流行星减速电机																10 Nm		40 Watts
4278ZY Micro brushed dc motor with planetary gearbox																For combination with
																Encoder & Brake
																可搭配编码器及刹车


TJX42RNb Series
Dimensional drawing 外形尺寸图(mm)

Picture of motor 电机实物图

Motor characteristics 电机特性
Housing material 安装面材质															Zinc alloy 锌合金
Gear chain material 齿轮材质															Steel & Plastic 钢，塑料齿
Back lash 齿轮背隙															≤2°
Bearings on output shaft 输出轴轴承															Ball bearing 滚珠轴承
Recommended max input speed 建议最大输入转速															≤7000RPM
Radial force 径向力															≤15kgf
Axial force 轴向力															≤8kgf
Maximum pressure force on shaft 主轴最大承受压入力															≤25kgf
Radial clearance 径向间隙															≤0.1mm
Axial clearance 轴向间隙															≤0.4mm
Operating temperature range 使用温度范围															-20℃-120℃
Commutator 换向结构															Brushed
Direction of rotation 旋转方向															CW / CCW
Noise 噪音															≤65dB


DC Motor Technical Data 直流电机参数
Values at 25-30℃ 室温下测量数值
Model 型号	Rated Voltage（V）额定电压	No-Load 空载参数		Rated 额定参数					Stall 堵转参数		*Tips: The datasheet on left side are limited, please consult our staffs for more parameter information. 提示：左边的数据表参数有限，请联系客服获取更多参数信息。
		Speed 转速	Current 电流	Speed 转速	Current 电流	Torque 力矩	Output 输出功	Eff 效率	Torque 力矩	Current 电流
		rpm	mA	rpm	A	mN.m	W	%	mN.m	A
4278ZY	12	5500	700	4400	2.09	40.00	18.43	73.42	120.00	12.50
4278ZY	24	5500	350	4400	1.11	41.40	19.07	71.82	124.20	6.98
Motor With Gearbox Technical Data 减速电机参数
Gearbox data 减速箱参数
Gear ratio 减速比 n : 1			3.7	5.2	13.7	19.2	26.9	51	71	100	139	189	264	369	512	721	977	1367	1911	2672	3639
Number of gear stages 减速级数			1	1	2	2	2	3	3	3	3	4	4	4	4	4	5	5	5	5	5
Gearbox Length 齿轮箱长度(mm)			29.7	29.7	39.4	39.4	39.4	49.1	49.1	49.1	49.1	60.3	60.3	60.3	60.3	60.3	71.5	71.5	71.5	71.5	71.5
Efficiency 效率(%)			0.85	0.85	0.72	0.72	0.72	0.61	0.61	0.61	0.61	0.52	0.52	0.52	0.52	0.52	0.44	0.44	0.44	0.44	0.44
4278ZY-12V-5500R
No-load speed 空载转速(RPM)			1486.5	1057.7	401.5	286.5	204.5	107.8	77.5	55.0	39.6	29.1	20.8	14.9	10.7	7.6	5.6	4.0	2.9	2.1	1.5
Rated speed 额定转速(RPM)			1189.2	846.2	321.2	229.2	163.6	86.3	62.0	44.0	31.7	23.3	16.7	11.9	8.6	6.1	4.5	3.2	2.3	1.6	1.2
Rated torque 额定扭矩(N.M)			0.126	0.177	0.396	0.555	0.777	1.253	1.744	2.457	3.415	3.946	5.512	7.705	10.000	10.000	10.000	10.000	10.000	10.000	10.000
Rated torque 额定扭矩(KG.CM)			1.23	1.73	3.88	5.44	7.62	12.28	17.09	24.07	33.46	38.67	54.02	75.51	98.00	98.00	98.00	98.00	98.00	98.00	98.00
Rated torque 额定扭矩(LB.IN)			1.42	2.00	4.47	6.27	8.78	14.15	19.69	27.74	38.55	44.56	62.24	86.99	112.91	112.91	112.91	112.91	112.91	112.91	112.91
4278ZY-24V-5500R
No-load speed 空载转速(RPM)			1486.5	1057.7	401.5	286.5	204.5	107.8	77.5	55.0	39.6	29.1	20.8	14.9	10.7	7.6	5.6	4.0	2.9	2.1	1.5
Rated speed 额定转速(RPM)			1189.2	846.2	321.2	229.2	163.6	86.3	62.0	44.0	31.7	23.3	16.7	11.9	8.6	6.1	4.5	3.2	2.3	1.6	1.2
Rated torque 额定扭矩(N.M)			0.130	0.183	0.410	0.574	0.805	1.297	1.805	2.542	3.534	4.084	5.705	7.974	10.000	10.000	10.000	10.000	10.000	10.000	10.000
Rated torque 额定扭矩(KG.CM)			1.28	1.79	4.02	5.63	7.89	12.71	17.69	24.92	34.63	40.03	55.91	78.15	98.00	98.00	98.00	98.00	98.00	98.00	98.00
Rated torque 额定扭矩(LB.IN)			1.47	2.07	4.63	6.48	9.08	14.64	20.38	28.71	39.90	46.12	64.42	90.04	112.91	112.91	112.91	112.91	112.91	112.91	112.91
Gear motor curve case 减速电机曲线示例
Project 工程名:			DC GEAR MOTOR			Date 日期:			2025/3/26			Performance (in an ambient temperature of 25-30℃)
Motor speed转速:			5500RPM		Full scale 量程:				100%		Eff	Rapidly test to prevent temperature rise and overload damage.
Gear chain 级数:			4						20.0		Watts	Constant voltage 恒压加载:					12		Volts
Gear ratio 减速比:			264						10.0		Amp.	Direction 方向:					CW/CCW
												At no-load 空载参数
															Speed 转速:			20.8		RPM
															Current电流:			0.70		AMPS
												Max instantaneous parameters 最大瞬时参数
															Torque 扭矩 :			25088.20		mN-m
															Current 电流:			8.40		AMPS
												At maximum efficiency 最高效率点参数
															Efficiency 效率 :			33.2		%
															Torque 扭矩 :			5715.5		mN-m
															Speed 转速 :			16.1		RPM
															Current 电流:			2.42		AMPS
															Output 输出功率:			9.66		Watts
												At maximum power output 最大功率输出参数
															Output 输出功率 :			13.893		Watts
															Torque 扭矩 :			12757.4		mN-m
															Speed 转速 :			10.4		RPM
															Current 电流 :			4.55		AMPS
Production Combination 其他配件
Accessories 名称					Voltage 电压			Resolution 分辨率					Channels 通道数						Remark
Magnetic Encoder 磁性编码器					5V-24V			13ppr					A&B
φ37-Brake 刹车					12V-24V			/					/
Optical encoder 光电编码器					5V-24V			100ppr, 200ppr, 256ppr, 360ppr, 400ppr, 512ppr, 1000ppr					A&B

Low-Noise 42mm Planetary Gearbox | TJX42RNb | <48 dB for Quiet Environments

Features

1. 42mm planetary gearbox, RNb suffix with noise-optimized gearing

2. Noise level <48 dB at 3000 rpm input, output torque up to 15 Nm

3. Plastic planet carrier with metal gears for damping

4. Helical planetary gears for smoother engagement

Description

TJX42RNb is specifically designed for noise-sensitive applications such as medical or office equipment. Noise level is kept below 48 dB. This is achieved using helical planetary gears, a damped polymer planet carrier, and precision ground gears. Output torque is 15 Nm. Reduction ratios from 5:1 to 200:1. Backlash <1°.