ZD High Precision 78mm ZDR Series Planetary Gearbox for Servo Motor

• Customization: Available
• Application: Motor, Machinery, Agricultural Machinery, servo motor gearbox
• Hardness: Hardened Tooth Surface
• Model NO.: 78ZDR
• Installation: Horizontal Type
• Layout: Coaxial
• Gear Shape: Helical gear
• Step: Double-Step
• Type: Planetary Gear Reducer
• Size: 78mm
• Backlash: 8~12
• Protection Grade: IP65
• Allowable Output Torque: 6.57~26.4 N.M
• Max. Input Speed: 5000rpm
• Transport Package: Cnt
• Specification: CCC, CE, UL. RoHS
• Trademark: ZD
• Origin: Cixi, Zhejiang, China
• HS Code: 8483402090
• Production Capacity: 30000PCS/Month

Product Description

78mm ZDR Series High Precision Planetary Gearbox For Servo Motor
 

Product Description

ZDR series planetary gearbox has adopted helical gear design, so the meshing of gears can be smoother. This series has a double-supported and sealed structure, easier to install for customers. It is widely used in linear manipulators, packaging machinery, assembly lines and etc. The maximum backlash of the ZDR series is less than 5 arc.min and the reduction ratio covers 3~81.


The Product Advantages of Planetary Gearbox:

1.Flexible structure design, in line with various working conditions.
2.Ring gear processing technology: Using internal gear slotting machine and hobbing machine; the precision of ring gear after processing can reach GB7.
3.Hardened gear secondary scraping technology: secondary high-speed dry cutting of gear eliminates gear deformation caused by heat treatment. Gear accuracy can reach GB6.
4.Reliable backlash testing.

Specifications

Outline Drawing:

1)When input speed is 3000rpm:

Product NO.	Reduction Ratio	Motor	Output Shaft Speed (rpm)	Standard Output Torque (N.m)	Instantaneous max.Output Torque (N.m)	Permissible Radial Load (N)	Permissible Axial Load (N)	Internal Moment Ohnertia Of Input Shaftconversion (x10-4 kg.m2)	Perrmissible Output Torque (N.m)	Instantaneous Max. Permissible Output Torque (N.m)
78ZDR	3	750	1000	6.37	19.3	784	392	0.913	6.86	20.6
	5	400	600	5.39	16.2	980	490	0.363	6.57	19.7
		750		10.7	32.1			0.713	11.5	34.3
	9	200	333	3.72	11.3	1180	588	0.275	9.70	29.2
		400		9.51	28.5

Note1) The moment of input shaft conversion is only gained from the reducer, so it does not include moment of inertia of the motor.
Note2) The max. input speed is 5000rpm. Usually set to 3000rpm or less.
Note3) The permissble radial load is indicated on the center of the output shaft.
Note4) All values are within the range corresponding to helical gear.


2)When input speed is 2000rpm

Product NO.	Reduction Ratio	Motor	Output Shaft Speed (rpm)	Standard Output Torque (N.m)	Instantaneous max.Output Torque (N.m)	Permissible Radial Load (N)	Permissible Axial Load (N)	Internal Moment Ohnertia Of Input Shaftconversion (x10-4 kg.m2)	Perrmissible Output Torque (N.m)	Instantaneous Max. Permissible Output Torque (N.m)
78ZDR	3	400	666	5.01	15.0	900	450	0.913	6.86	20.6
	5	200	400	3.82	11.5	1120	560	0.363	6.57	19.7
		400		8.35	25.1			0.713	11.5	34.3
	9	100	222	2.35	7.04	1340	670	0.275	9.70	29.2
		200		6.64	19.9
	15	100	133	3.91	11.7	1670	833	0.300	16.2	48.6
		200		11.1	33.2
	20	100	100	5.73	17.2	1790	895	0.294	21.1	63.3
		200		14.8	44.4
	25	100	80.0	7.16	21.5	1670	833	0.288	21.7	64.9
		200		18.5	55.4
	35	50	57.0	4.43	13.3	1900	950	0.262	15.5	46.6
		100		12.7	38.1
	45	50	44.4	5.80	17.4	1670	833	0.0285	9.50	28.6
	81	50	24.6	9.70	29.2	1670	833	0.0270	9.70	29.2

Note1) The moment of input shaft conversion is only gained from the reducer, so it does not include moment of inertia of the motor.
Note2) The permissble radial load is indicated on the center of the output shaft.
Note3) All values are within the range corresponding to helical gear.


Mechanism & Parts:

Double support mechanism

1.The planetary gear is placed in the middle of the output shaft.
2.The output shaft bearing is placed at both ends of the planetary gear.
3.Separate sun gear and coupling.










Compact output shaft mechanism

It adopts the design of output shaft integrated system, compact structure, high rigidity, and it can withstand large impact. Place the input coupling and the sun gear at the center of the output shaft to improve the concentricity of the components, thereby effectively controlling the gear clearance and improving the backlash of the whole gearbox.

 

Full needle structure

The inner bearing of the planetary gear adopts a full-needle design, the inner hole is made by a grinding process, the surface hardness is HRC60, and the cylindricity is less than 0.003mm.

















Ring gear structure

The integral structure of the ring gear and the output flange improves its rigidity and reduces misassembly.









 

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Company Profile

 

FAQ
Q: What're your main products?
A: We currently produce Brushed Dc Motors, Brushed Dc Gear Motors, Planetary Dc Gear Motors, Brushless Dc Motors, Stepper motors, Ac Motors and High Precision Planetary Gear Box etc. You can check the specifications for above motors on our website and you can email us to recommend needed motors per your specification too.

Q: How to select a suitable motor?
A:If you have motor pictures or drawings to show us, or you have detailed specs like voltage, speed, torque, motor size, working mode of the motor, needed lifetime and noise level etc, please do not hesitate to let us know, then we can recommend suitable motor per your request accordingly.

Q: Do you have a customized service for your standard motors?
A: Yes, we can customize per your request for the voltage, speed, torque and shaft size/shape. If you need additional wires/cables soldered on the terminal or need to add connectors, or capacitors or EMC we can make it too.

Q: Do you have an individual design service for motors?
A: Yes, we would like to design motors individually for our customers, but it may need some mold developing cost and design charge. 

Q: What's your lead time?
A: Generally speaking, our regular standard product will need 15-30days, a bit longer for customized products. But we are very flexible on the lead time, it will depend on the specific orders.


Please contact us if you have detailed requests, thank you !