Products>Gears>Bevel Gears

Bevel gears from Graessner

In the program there are DynaGear, PowerGear, ValueGear, BevelGear and PlanetGear.
Gears are made by Gleason form. There are taper roller bearings in all gearboxes which gives a very long lifetime and no increase of backlash.

powergear

PowerGear

The compact and rigid design assures highest performance at small dimensions and low weight
High torque
Efficiency of the gearbox, 98%
Flange, solid or hollow shaft execution
11 sizes, from P/X54 to P/X450

To choose right gearbox, see table below

PowerGear output torque

PowerGear	Unit	P54	P75	P90	P110	P140	P170	P210	P240	P280	P360	P450
1:1 Nominal torque Max permissable torque	Nm	12 18	45 68	78 117	150 225	360 540	585 878	1300 1950	2150 3225	3200 4800	3750 5625	6600 9900
1,5:1 Nominal torque Max permissable torque	Nm	12 18	45 68	78 117	150 225	360 540	585 878	1300 1950	2150 3225	3200 4800	3550 5325	7000 10500
2:1 Nominal torque Max permissable torque	Nm	12 18	42 63	68 102	150 225	330 495	544 816	1220 1830	2010 3015	3050 4575	3500 5250	7000 10500
3:1 Nominal torque Max permissable torque	Nm	12 18	33 50	54 81	120 180	270 405	450 675	1020 1530	4650 2475	2850 4275	3350 5025	7000 10500
4:1 Nominal torque Max permissable torque	Nm		28 42	52 78	100 150	224 336	376 564	860 1290	1410 2115	2300 3450	2900 4350	6600 9900
5:1 Nominal torque Max permissable torque	Nm		25 38	40 60	85 128	196 294	320 480	740 1110	1210 1815	2000 3000	2600 3900	6600 9900
Max input speed	rpm	8000	6500	5500	4500	3500	3000	2200	2000	1700	1500	1000

PowerGear, reinforced	Unit	X54	X75	X90	X110	X140	X170	X210	X240	X280	X360	X450
1:1 Nominal torque Max. permissable torque	Nm	17 25	87 131	135 203	290 435	625 938	1020 1530	2050 3075	3350 5025	5200 7800	5800 8700	10400 15600
Max input speed	rpm	8000	3000	2500	2000	2000	15000	1200	1200	1700	1500	1000

Thermal performance limit

Size	P54 / X54	P75 / X75	P90 / X90	P110 / X110	P140 / X140	P170 / X170	P210 / X210	P240 / X240	P280/ X280	P360/ X360	P450/ X450
Thermal performance limit (kW)	2,8	5,5	7,4	10,8	16,1	23,4	28,6	45,3	60,3	83	127

The gearbox performance is limited by the maximum allowable oil bath temperature. The required effective performance must not exceed the limit values allowed for continuous duty.
If on intermittent duty or in the event of increased ambient temperatures, the following factors can be applied as guide values for the determination of the related allowable thermal performance limit.

Duty cycle per hour in %	100	80	60	40	20
Factor	1.0	1.2	1.4	1.6	1.8

Ambient temp. °C	10	20	30	40	50
Factor	1.20	1.00	0.87	0.75	0.62

DynaGear

Single stage right angle gearbox with ratios from 3:1 to 15:1
The gearbox is lubricated for life and under normal industrial conditions the gearbox is maintenance free after installation
Single piece cast aluminium housing for maximum rigidity and small weight
The high efficiency of the gearbox, up to 96%
High quality taper roller bearings
The DynaGear performance is adjusted to all major servomotors and can be variable adapted via flange and coupling
Using the coupling stiffness, the system torsional resonance behaviour can be tuned
Backlash < 2-5 arcmin

DynaGear

Gear size

DynaGear	Unit	Ratio	D55	D75	D90	D115	D140	D190
Emergency output torque T2NOT	Nm	i = 3-10 i = 12/15	70 50	140 100	280 190	520 360	1440 1020	2880 2040
Max acc. output torque T2B	Nm	i = 3-10 i = 12/15	53 38	105 75	210 143	390 270	1080 765	2160 1530
Nominal output torque T2N	Nm	i = 3-10 i = 12/15	35 25	70 50	140 95	260 180	720 510	1440 1020
Max input speed n1max	rpm		8000	8000	7000	6000	5000	4500
Nominal input speed n1N	rpm		6000	6000	5000	4000	3000	2500

DynaGear economy

Single stage right angle gearbox with ratios up to 15:1
Gearbox lubricated for life – maintenance free after installation
High efficiency - up to 96%
High quality taper roller bearings
Adaptable to all motors via input flange and coupling
Gearbox keyway free – abrasion and backlash free torque transfer by using a shrink fit between shaft and gearwheel

DynaGear economy

DynaGear economy	Unit	Ratio	DE-55	DE-75	DE-90
Emergency output torque T2NOT	Nm	i = 5-10 i = 15	70 50	140 100	280 190
Max acc. output torque T2B	Nm	i = 5-10 i = 15	53 38	105 75	210 143
Nominal output torque T2N	Nm	i = 5-10 i = 15	35 25	70 50	140 95
Max input speed n1max	rpm		6000	6000	5000
Nominal input speed n1N	rpm	i = 5-8 i = 10-15	3700 4200	3100 3500	2700 3000