Emerson 3000 installation instructions OtN Shaft Mount Reducer Installation

1. OtN Shaft Mount Reducer Installation

For long service and dependable performance, an OtN shaft mounted gear unit must be properly supported and accurately aligned. The following instructions are a step-by-step guide to meeting these requirements for an OtN 3000 design shaft mounted product. If there is a need to vary or deviate from any of these installation instructions, contact Application Engineering Department at 1-800-626-2093 before completing the installation.

CAUTION:  When the driven shaft is smaller than the maximum bushing size for a gear frame, check the driven shaft and key stress per ANSI/AGMA Std. 6001-D97 for the application.

1.1  Reducer and Driven Shaft Preparation

1.1.1  The driven shaft diameter is to be within the commercial tolerances for turned, ground and polished bars. The key and keyseat in the driven shaft are to be in accordance with commercial standards for the size, depth, offset, and parallelism.

1.1.2  The driven shaft on which the gear unit is to be mounted must be straight, clean, and free of burrs.

1.1.3  Rotate the driven shaft on which the gear unit is to be mounted so that the shaft keyseat is in the upward position.

1.1.4  A lifting lug is provided to lift the gear reducer or gearmotor into position.

WARNING!  Never lift the gear unit by the input or output shaft.  The lifting lug is designed for lifting only the gear reducer or gearmotor.  Do not use the lifting lug to lift attached assemblies.

Do not apply grease, oil, or any anti-seize compounds to the taper bore of the reducer, barrel of the bushing, driven shaft or the bushing bore. If any of these substances are applied, equipment failure and personal injury may result.

EXTERNAL KEY FURNISHED

EXTERNAL KEY

BUSHING BUSHING

RING

TYPE 1

BUSHING

	KEY SHOWN	TYPE 2
		BUSHING
	FOR TYPE 2
BUSHING
	BUSHING
FLANGE
TYPE 2		Figure 1-2
BUSHING
THROUGH KEY FURNISHED

Figure 1-1

1.2  Determine Mounting Configuration – Bushed Bore Models

Due to the unique design of OtN bushed shaft mounted product, the reducer may be mounted to the driven shaft in a variety of configurations. The following instructions will help to determine the correct mounting configuration based on the available shaft and key length

1.2.1  Measure the available driven shaft length “H” (in inches) starting with the end of the driven shaft to the first obstruction or point of interference.

1.2.2  Measure the length of available keyseat “K” in the driven shaft (in inches) starting from the end of the shaft to the end of the useable keyseat.

1.2.3  The following sections 1.3, 1.4, 1.5 show the three standard mounting configurations for the Browning® OtN tapered bushed “33B” gearing.  Refer to the following sections in sequence to determine the optimum mounting configuration for your application.

1.2.4  Compare the measured values of H and K of the driven shaft to the tabulated values of H and K. If the measured values for H and K are greater than the tabulated values, the mounting configuration shown in the figure may be used. If the measured values for H and K are less than the tabulated values, proceed to the next figure and repeat this step.

Note:  If the measured values for H and K are less than the tabulated values shown in 1-5, contact the Application Engineering Department at 1-800-626-2093.

1.2.5  Tightening torque for bushing components.

Table 1.2.5

		33B Taper Bushed				Screw Conveyor
Gear	Tapered			End Cap		Keeper
	Bushing Cap			Setscrews
Frame						Bolts
	screws			(nylon tipped)
	Size		Ft.-Lbs	Size	In-Lbs	Size	Ft.-Lbs
31	5/16-18		16	1/4-20	60	-	-
32	5/16-18		16	1/4-20	60	1/2-13	99
331	5/16-18		16	1/4-20	60	1/2-13	99
33A	3/8-16		29	1/4-20	60	-	-
34	3/8-16		29	1/4-20	60	5/8-11	200
35	3/8-16		29	1/4-20	60	3/4-10	350
36	3/8-16		29	1/4-20	60	3/4-10	350
37	1/2-13		70	1/4-20	60	1-8	600
38	1/2-13		70	1/4-20	60	1-8	600

1This design is replaced by 33A design effective Jan. 2010 for 33B output

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