1 pcs High Precision Planetary Reducer (SPLF90-MA / SPLF90-MB) four Pcs Mounting Bolts 1 Low Noise 2 High Precision 3 Servel Reduction Ratio SPLF90-L1MB ( 4/5/7/10) ( Fit Nema34 86 Stepper Motor With 14mm Shaft ) SPLF90-L2MB ( 16/20/25/28/35/40/45/50/70) ( Fit Nema34 86 Stepper Motor With 14mm Shaft ) SPLF90-L1MA ( 4/5/7/10) ( Fit Nema32 80ST 750W Servo Motor With 19mm Shaft ) SPLF90-L2MA ( 16/20/25/28/35/40/45/50/70) ( Fit Nema32 80ST 750W Servo Motor With 19mm Shaft ) SPLF90-L1MA or SPLF90-L1MB Reduction Ratio i=(4/5/7/10):1 Backlash ≤10arcmin Full Load Efficiency 96% Noise ≤60dB Rated Input Speed 3000min-1 Weight three Max Input Speed 6000min-1 Protection Level IP54 Average Lifespan 20000h Lubrication Type Long-term Lubrication SPLF90-L2MA or SPLF90-L2MB Reduction Ratio i=(16/20/25/28/35/ 40/45/50/70):1 Backlash ≤15arcmin Full Load Efficiency 94% Noise ≤60dB Rated Input Speed 3000min-1 Weight 3 Max Input Speed 6000min-1 Protection Level IP54 Average Lifespan 20000h Lubrication Type Long-term Lubrication