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E20 20mm Centres 3.84Nm

Gearboxes Reducers » Crossed Axis Helical Gearbox »
E20 Type : 6mm Dia. Bores Input & Output 0.6Nm-3.84Nm ratios 1:1 to 40:1

E20 Right Angle Helical Heavy Duty Worm Gear Reducers
Discounts 1+ 0% 6+ 5% 20+ 10% 50+ 15% 100+ 20%

Part
Number 		Models Ratio Type Nm Output
at
1000 Rpm 		Input
Face 		Efficiency
at
1000 Rpm 		Max.
Input
Speed 		Reflected Inertia
at Input
(kg m2)		 Self
Locking
Output 		Cost Quantity Add to
Basket
E20-1 1:1 Helical 1.00 A 88% 4000 3.762 x 10-6 No £150.64
E20-2 2:1 Helical 1.00 A 86% 4000 2.349 x 10-6 No £150.64
E20-3 3:1 Helical 1.00 A 85% 4000 2.011 x 10-6 No £150.64
E20-4 4:1 Helical 1.00 A 84% 4000 1.986 x 10-6 No £150.64
E20-5 5:1 Helical 1.00 A 80% 4000 1.544 x 10-6 No £150.64
E20-8 8:1 Wormwheel 1.31 A 80% 2000 1.622 x 10-6 No £150.64
E20-10 10:1 Wormwheel 1.47 A 73% 2000 1.609 x 10-6 No £150.64
E20-20 20:1 Wormwheel 1.63 A 67% 2000 1.593 x 10-6 Yes £150.64
E20-40 40:1 Wormwheel 1.80 A 60% 2000 1.589 x 10-6 Yes £150.64
E20-SP 1:1-40:1 Special Ratios Replace SP with Ratio Required £191.87
E20-SPA 1:1-40:1 Low Backlash =30': Replace SP with Ratio Required £191.87
E20-SPLH 1:1-40:1 Left Hand Helicals: Replace SP with Ratio Required £191.87

Extras Cost Quantity Add to
Basket
Output Shaft - Single £19.27
Output Shaft - Double £24.84
Output Key KK2-22 £0.88
R/H Helicals are Standard. L/H available at E20-SP price
(reverses output rotation)
Special bores are available - including different sizes, metric & imperial.
Low Backlash version available - same as standard but featuring 30 Arc
minimum backlash on output (6-8 weeks delivery)
e.g.E20-4A for 4:1 ratio
Contact Sales for details.

Material
Case: AA15 Red Anodised Aluminum (6082-T6)
E20-1 - E20-5 Gears and E20-8 - E20-40 Worm :
Hardened Alloy Steel 655M13 (14NiCr14)
or 805M20 (21NiCrMo2) (8620)
depending on manufacturer's preference.
E20-8 - E20-40 Wheel : Aluminium Bronze (CA104 / AB2)
Circlips : Steel (not plated)
Bearing : Steel 2RS (Rubber seals fitted)		 Nm output torque:
Ratio 1:1 2:1 3:1 4:1 5:1 8:1 10:1 20:1 40:1
Rpm Input
3000 0.60 0.60 0.60 0.60 0.60 - - - -
2000 0.70 0.70 0.70 0.70 0.70 1.05 1.20 1.36 1.52
1000 1.00 1.00 1.00 1.00 1.00 1.31 1.47 1.63 1.80
500 1.40 1.40 1.40 1.40 1.40 1.93 2.08 2.22 2.37
100 1.80 1.80 1.80 1.80 1.80 2.60 2.70 2.83 2.95
50 1.90 1.90 1.90 1.90 1.90 2.95 3.13 3.31 3.40
10 2.00 2.00 2.00 2.00 2.00 3.62 3.70 3.80 3.84
Performance
Weight: 0.255kg Standard Backlash: 1°
Greased for life: Shell Gadus S2 V220AD 2
Self Locking Output: Subject to ratio and only applies in static condition.
Amount of locking effect may vary due to manufacturing processes.
Maximum Overhung Loads at 1000rpm: Overhung Load (Fx) = 15kg.
Maximum Thrust Loads at 1000rpm: Thrust Load (Fa) = 10kg.
Testing in your application is necessary.
You will need to assess duty cycles and confirm suitability
with your own calculations. Figures listed are for guidance only.

Downloads
e-cad logo 3DPartstream : Click to browse our full 3DPartStream catalogue or a part number (above) to download the 3Dmodel.
PDF IconPDF Documents : Catalogue Page | E Technical | Full E Range | General Gearbox Technical

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