42MM High Efficiency Low Backlash Precision Planetary Gearbox NEMA 17 Motor
1. JQHS-42-1 Stepper Motor specification
| Model No. |  			 Motor Length  |  			Current | Resistance | Inductance | Holding Torque | # of Leads | Detent torque | Motor Weight  |  		
| /Phase | /Phase | /Phase | ||||||
| MM | A | Ω | mH | N.m | No. | N.m | Kg | |
| JQHS-42-1-1 | 34 | 1.8 | 1.7 | 2.2 | 24 | 4 | 0.013 | 0.28 | 
2. Planetary Gearbox Specifications:
| Ratio | 3.6 | 7.2 | 9 | 10 | 18 | 36 | |
| No. of gear trains | 2 | 3 | 4 | ||||
| Nominal torque | 2.5N.m | ||||||
| Ultimate torque | 3.0N.m | ||||||
| Efficiency | 81% | 72% | 65% | ||||
| Backlash | 0.6 | 0.4 | |||||
| Torque (at 300rpm) | 0.73 | 1.45 | 1.8 | 2.0 | - | - | |
| Speed |  			 83  |  			41 | 33 | 30 | - | - | |
3. Dimension :

4. Typical Applications
5. Terms of trade
| Terms of price | FOB,CIF,CFR,EXW,DDP,etc. | 
| Terms of payment | 100% T/T in advance for samples | 
| Bulk quantity payment way can be negotited | |
| Warranty | 12 months limited warranty once the items are delivered to the buyer. | 
| Lead time | Usually within 2 weeks for trial orders, within 3 weeks for bulk orders. | 
| Package | Cartons /Pallets | 
| Place of loading | Shanghai, Ningbo, etc. | 
| Shipment carrier | Items are usually shipped via Fedex,DHL, TNT,UPS,EMS for trial orders and via vessel for bulk orders.  |  		
| Delivery time | Usually within 5 working days by Express 15-30 working days by vessel | 
6. Our promise to our Customers: