Catalogues - universal-worm-gear-units

Catalogue UNIVERSAL - Worm Gear Units

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. - UNIVERSAL Worm Gear UnitsTechnical J Explanations

Torque

During continuous operation at constant load, the maximum output torques M_2max represent the load limit. Correct configuration is carried out according to the chapter "Selecting a Gear Unit", taking into account operating factors.

The output limiting torque M2g_renz will tolerate static for a short time while running without incurring damage to the gear unit. The output limiting torque M2g_renz represents the upper limit of the permited load and should not exceed it during impact.


Maximum Output Torque M_2max at n₁=1400 min"¹
Type	SK 1SI 31	SK 1SI 40	SK 1SI 50	SK 1SI 63	SK 1SI 75
^M2max	30 Nm	50 Nm	90 Nm	160 Nm	260 Nm
Output Limiting Torque M2_qrenz
Type	SK1SI 31	SK1SI 40	SK1SI 50	SK1SI 63	SK 1SI 75
^M2 grenz	75 Nm	125 Nm	225 Nm	400 Nm	650 Nm

Speed

Please inquire if you require greater speeds.

Gear Ratios

The gear unit is designed for a motor or input speed up to 1800 min-1. Greater speeds reduce operating life.

All gear ratios, including the multi-gear unit, are finallydetailed exactly, (e.g. i=10 is ¡=10.000000000...)

All helical worms of the UNIVERSAL worm gear unit are right hand pitch. This results in the direction of rotation.

Sequence of Ratios

7.5 10 12.5 15 20 25 30 40 50 60 80 100

Gear ratios are uniform for all 5 worm gear unit sizes.

Efficiency

The smooth tooth flanks and the standard lubrication in particular provide UNIVERSAL worm gear units the greatest efficiency. The efficiencyincreases with new worm gear units in the initial phase of normal use bythe worm gears wearing in. The output torque and ratings in the selection lists take into account the efficiency n in the drive unit status when not in operation.

Because of the hydrodynamic lubrication in the gearing, the efficiencyincreases with the input speed of worm gear units. This results in an initial lower efficiency n_a while starting the motor from a stand still. The torque should be taken into account, when it must be moved under load, of which the following guideline values for initial efficiency n_a is dependent on the gear ratio i_worm:


Initial Efficiency Levels n_a
ⁱsch	5	7.5	10	12.5	15	20	25	30	40	50	60	80	100
SK 1SI 31
to : na [%]	72	67	62	59	53	47	43	36	31	27	25	20	17
SK 1SI 75

Efficiency Levels n with n₁=1400 min"¹


ⁱsch	5	7.5	10	12.5	15	20	25	30	40	50	60	80	100
SK 1SI 31: n [%]	86	82	80	76	71	67	63	55	50	45	42	36	32
SK 1SI40: n [%]	88	85	82	80	75	71	68	60	54	50	46	41	36
SK 1SI 50: n [%]	90	87	85	83	79	75	72	65	60	56	52	46	42
SK 1SI 63: n [%]	92	89	87	86	82	79	76	69	64	61	57	51	47
SK 1SI 75: n [%]	93	90	84	88	84	82	80	77	69	65	62	57	52

Lubrication

The worm gear units are lubricated for life at the factorywith a high-quality, synthetic long-life lubricant with a polyglycol base. Because of this, the gears are maintenance free.

Universal worm gear units of the size 63 and 75 have standard oil screw fittings. This allows for the valves to be bled at initial start up. The optional bleed valve module contains a quick guide on the mounting position dependent installation of the bleed valve fitting. We would be happyto provide you more information. Bleed valve module order number: 60693500


Special Lubricants: CLP PG 220 DIN 51502
Type	SK 1SI 31	SK 1SI 40	SK 1SI 50	SK 1SI 63	SK 1SI 75
Quantity	30ml	55ml	95 ml	180 ml	360 ml

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