WGWEA Series

The WGWEA Series comprises a slewing ring with a true worm gear mounted in a casing with an hour-glass shaped worm shaft mounted on a common platform for higher torque applications.

The gearing is protected from the elements by a cast iron housing and improved sealing arrangement.

New for 2024 is the introduction of the “twin-scroll” series which feature a different worm shaft that effectively halves the reduction ratio while making the gearing reversible (or non-self-locking) – eliminating the “stick-slip effect” encountered in some applications.

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Product Overview

The WGWEA Series comprises a slewing ring with a true worm gear mounted in a casing with an hour-glass shaped worm shaft mounted on a common platform for higher torque applications.

The gearing is protected from the elements by a cast iron housing and improved sealing arrangement

Slewing drives usually consist of an inner ring and an outer ring which are separated by balls with either an helical or true worm gear in the outer ring. This is mounted on a common housing that contains a worm shaft and shaft support bearings.

The rings may incorporate tapped or clearance holes for bolts. The rolling elements are usually separated by spacers and the raceways hardened and ground. Nitrile rubber strip seals retain lubricant in the bearing and prevent the ingress of contaminants. Grease fittings allow re-lubrication to the bearing raceway, the worm gear and the supporting worm shaft bearings.

QCB Slewing Drives are normally supplied with motors in RIGHT HAND configuration as illustrated below.
(The outer/ rotating ring is facing up, the worm shaft casing is toward you and the motor mount is on the right hand side)

Be aware the load speed is usually restricted to 3 rpm max. QCB Spur gear slew drives can offer faster load speeds.

What are the Typical uses of Slew Drive?

Wind Turbines
Solar Trackers
Excavators
Satellite and Radar
Robotic assembly arms

Dimensions

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Outline dimensions					Outer holes		Inner holes		Bolt size	Gear ratio	Output torque	Accuracy	Weight
QCB reference	A	B	Di	E	H1	La	na	Li	ni			KNm	deg
QCB reference	mm	mm	mm	mm	mm	mm		mm						kg

WGWEA 7 47 25 H R	207	143	105	295	97	205	10	135	12-1	M12	47:1	3.5	<0.15	35
WGWEA 9 62 25 H R	244	180	145	330	108	270	16	175	16-1	M16	62:1	8	<0.15	53
WGWEA 12 79 25 H R	287	223	229	370	108	358	18	259	20-1	M16	79:1	9.5	<0.15	67
WGWEA 14 86 25 H R	302	238	265	380	108	390	18	295	24-1	M16	86:1	10.8	<0.13	75
WGWEA 14 43 25 H R	301.5	237.5	265	380	108	390	18	295	24-1	M16	43:1	10.8	<0.13	75
WGWEA 17 104 25 H R	349	285	332	405	108	479	20	365	20	M16	104:1	12.9	<0.1	96
WGWEA 17 52 25 H R	349	285	332	405	108	479.4	20	365.1	20	M16	52:1	12.96	<0.1	96
WGWEA 19B 94 25 H R	378	313	380	435	108	520	32	420	32-1	M16	94:1	18.5	<0.1	118
WGWEA 21 90 R MTAP	415	350	425	483	130	584.2	36	466.7	36-1	M20	90:1	28.7	<0.1	172
WGWEA 21 45 25 H R	415	350	425	483	130	584.2	36	466.7	36-1	M20	45:1	28.7	<0.1	172
WGWEA 25 104 R MTAP	464	399	525	513	130	675	36	565	36-1	M20	104:1	34	<0.1	202
WGWEA 28 110 50 H R	562.2	482.2	600	665.5	175	810	40	650	40-1	M24	110:1	40	<0.15	418
WGWEA 28 55 50 H R	562.2	482.2	600	665.5	175	810	40	650	40-1	M24	55:1	40	<0.15	418

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