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Bridge Mounted Drive Units for Clarifiers & Thickeners

Bridge Mounted Drive Units: Applications & Overview
A low-speed, high-torque, totally enclosed gear drive with positive overload protection The drive unit is supported by a bridge completely spanning the tank The drive unit has a central output shaft to drive the rakes Used in industrial, municipal and mining clarifiers and thickeners Typically used on tank sizes from 10 to 100 ft (3 to 30 m) in diameter
Bridge Mounted Drive Units: Primary Features
Forged alloy steel main gear and pinion designed for 20 years of life calculated per AGMA 2001-C95 Precision, four-point-contact main bearing, with a 10-year warranty Accurate torque gauge calibrated in ft-lbf, N-m or any units desired Alarm and cutoff switches and maximum torque limiting via shear pin or pressure relief valve No lower pinion bearing, eliminating a common source of drive failure Designed for minimum maintenance with permanently lubricated intermediate reducer

BRIDGE MOUNTED UNITS - Torque Capacities

Model	Continuous		Maximum Overload		Yield
	ft-lbf	N-m	ft-lbf	N-m	ft-lbf	N-m
SX-A*	3,000	4,100	6,000	8,200	8,100	11,000
SX-B*	6,000	8,200	12,000	16,400	16,200	22,000
SX-C*	10,000	14,000	20,000	28,000	27,000	36,500
S25-A*	14,000	19,000	28,000	38,000	54,000	73,000
S34-A*	18,500	25,000	37,000	50,000	120,000	163,000
S34-B*	27,000	36,500	54,000	73,000	120,000	163,000
S44-B*	35,000	47,500	70,000	95,000	195,000	264,000
S44-C*	47,000	64,000	94,000	128,000	195,000	264,000
S60-C*	65,000	88,000	130,000	176,000	440,000	597,000
S60-D*	125,000	169,500	250,000	339,000	440,000	597,000
S80-D*	140,000	190,000	280,000	380,000	750,000	1,017,000
S80-E*	250,000	339,000	500,000	678,000	750,000	1,017,000
S44-B*2	70,000	95,000	140,000	190,000	390,000	528,000
S44-C*2	94,000	128,000	188,000	256,000	390,000	528,000
S60-C*2	130,000	176,000	260,000	352,000	880,000	1,194,000
S60-D*2	250,000	339,000	500,000	678,000	880,000	1,194,000
S80-D*2	280,000	380,000	560,000	760,000	1,500,000	2,034,000
S80-E*2	500,000	678,000	1,000,000	1,356,000	1,500,000	2,034,000

S-Series Details/Dimensions

Item	Description
1. 2. 3. 4. 5. 6. 7. 8. 9. 10.	Machine frame Pinion gear Planetary gearbox Primary speed reducer Torque gauge assembly Electric motor Top plate Main gear-bearing Drain plug Drive hub

S-Series Drive Unit Details

Model	A		B		C		D		Output Flange	Weight
	in	mm	in	mm	in	mm	in	mm	in	lb	kg
S25-A	40	1,016	48	1,220	7.5	190	8	203	6"	2,100	995
S34-A	48	1,219	56	1,422	8	203	8	203	8"	3,000	1,364
S34-B	52	1,381	60	1,524	9.3	236	8	203	8"	3,200	1,455
S44-B	60	1,524	68	1,727	9.3	236	10	254	10"	4,000	1,818
S44-C	64	1,626	72	1,829	11.3	287	10	254	10"	4,300	1,955
S60-C	76	1,930	84	2,134	11.5	292	12	305	18"	6,400	2,909
S60-D	80	2,032	88	2,235	13	330	12	305	18"	7,200	3,273
S80-D	96	2,438	104	2,642	13.5	343	14	356	24"	10,800	4,909

Metric Flanges are available for all models as required.

SX-Series Details/Dimensions

Item	Description
1. 2. 3. 4. 5. 6.	Machine frame Planetary gearbox Adapter assembly Primary speed reducer Electric motor Torque gauge assembly

SX-Series Drive Unit Details

Model	A		B		C		Output Flange	Weight
Model	in	mm	in	mm	in	mm	in	lb	kg
SX-A	36	914	24	610	5.2	132	4"	700	318
SX-B	36	914	24	610	7	178	6"	900	410
SX-C	36	914	24	610	8.6	218	6"	1,200	545

Metric Flanges are available for all models as required.

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Clarifiers / Drive Units > Bridge Mounted Drive Units for Clarifiers & Thickeners

Bridge Mounted Drive Units: Applications & Overview

Bridge Mounted Drive Units: Primary Features

S-Series Details/Dimensions

SX-Series Details/Dimensions