Dodge Imperial - User Manual

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Imperial & ISAF Bearing

Instruction Manual

These instructions must be read thoroughly before installation or operation. This instruction manual was accurate at the time of

printing. Please see dodgeindustrial.com for updated instruction manuals.

WARNING: To ensure the drive is not unexpectedly started, turn o and

lock-out or tag power source before proceeding. Failure to observe these

precautions could result in bodily injury.

WARNING: Because of the possible danger to person(s) or property

from accidents which may result from the improper use of products,

it is important that correct procedures be followed. Products must be

used in accordance with the engineering information specied in the

catalog. Proper installation, maintenance and operation procedures

must be observed. The instructions in the instruction manuals must

be followed. Inspections should be made as necessary to assure

safe operation under prevailing conditions. Proper guards and other

suitable safety devices or procedures as may be desirable or as may

be specied in safety codes should be provided, and are neither

provided by Dodge

nor are the responsibility of Dodge. This unit and

its associated equipment must be installed, adjusted and maintained

by qualied personnel who are familiar with the construction and

operation of all equipment in the system and the potential hazards

involved. When risk to persons or property may be involved, a holding

device must be an integral part of the driven equipment beyond the

speed reducer output shaft.

WARNING: All products over 25 kg (55 lbs) are noted on the shipping

package. Proper lifting practices are required for these products.

INSPECTION

Inspect shaft to ensure it is smooth, straight, clean and within

commercial tolerances.

MOUNTING

Install the Non-Expansion Unit First

1. Remove lock plate located on the face of the locknut.

2. Turn locknut counterclockwise until bearing will freely slide

onto the shaft.

3. Slide bearing to the desired position on the shaft.

NOTE: All weight must be removed from the bearing

when obtaining the zero reference point.

4. The zero reference point is dened as the point when the

clearance between the adapter sleeve, shaft, and bearing

bore has been removed.

To reach the zero reference point, rotate locknut clockwise

using both hands as tightly as possible. When mounting

bearing with shaft sizes 3-15/16" and larger, the following test

must be performed. As a test to ensure you have reached the

zero reference point, tap on the O.D. of the nut with a hammer

and attempt to rotate the nut using both hands. If the nut will

not rotate then you have reached zero reference point and

you should proceed to step 5. If you can rotate the nut using

both hands, you have not reached the true zero reference

point and you should repeat step 4a until zero reference point

is obtained. When the zero reference point is reached, the

bearing will not be able to move by hand axially on the shaft.

5. Scribe a line through the locknut face and adapter face.

6. Using a spanner or drift and hammer, rotate locknut clockwise

by the number of turns shown in Table 1.

Table 1–Locknut Rotation from “Zero Reference Point”

Shaft Size (inches) Locknut Rotation

1-1/8 - 1 7/16 3/4 to 7/8 turn

* 1-1/2 3/4 to 7/8 turn

** 1-1/2 7/8 to 1 turn

1-5/8 - 2 7/8 to 1 turn

2-3/16 - 3 1 to 1-1/4 turns

3-3/16 - 4 1-1/4 to 1-1/2 turns

4-7/16 - 4 1/2 1-1/8 to 1-3/8 turns

4-15/16 - 5 1/2 1-3/8 to 1-5/8 turns

5-15/16 - 6 1 to 1-1/4 turns

6-7/16 - 7 1-1/8 to 1-3/8 turns

* IMPERIAL IP & ISAF

** IMPERIAL IP With Type E Dimensioned Housing

Figure 1

Locknut

Lock Plate

Adapter Sleeve

Scribe Line

Figure 2

Dismount Mount

Figure 3

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Summary

Safety Precautions

Prevent Unexpected Drive Start

Ensure drive is locked out/tagged out before proceeding to prevent accidental startup and potential injury.

Lifting Heavy Products

Proper lifting practices are required for products weighing over 25 kg (55 lbs).

General Product Safety and Responsibility

Follow correct procedures, engineering info, and manuals for safe operation and maintenance.

Installation Procedure

Shaft Inspection

Inspect shaft for smoothness, straightness, cleanliness, and commercial tolerances.

Mounting Non-Expansion Unit

Install the non-expansion unit first, ensuring bearing can freely slide onto the shaft.

Achieve Zero Reference Point

Rotate locknut clockwise to remove clearance between adapter sleeve, shaft, and bearing bore.

Locknut Rotation for Zero Reference

Rotate locknut clockwise by specified turns based on shaft size to set zero reference point.

Field Conversion and Lubrication

Convert to Expansion Bearing

Modify Imperial IP or ISAF bearings for expansion functionality by adjusting snap rings or components.

Grease Lubrication Guidelines

Relubricate bearings with compatible NLGI #2 Lithium Complex grease as per Table 3 intervals.

Storage and Special Shutdown

Protect bearings in adverse conditions; add grease before running after storage or idle periods.

Summary

Safety Precautions

Prevent Unexpected Drive Start

Ensure drive is locked out/tagged out before proceeding to prevent accidental startup and potential injury.

Lifting Heavy Products

Proper lifting practices are required for products weighing over 25 kg (55 lbs).

General Product Safety and Responsibility

Follow correct procedures, engineering info, and manuals for safe operation and maintenance.

Installation Procedure

Shaft Inspection

Inspect shaft for smoothness, straightness, cleanliness, and commercial tolerances.

Mounting Non-Expansion Unit

Install the non-expansion unit first, ensuring bearing can freely slide onto the shaft.

Achieve Zero Reference Point

Rotate locknut clockwise to remove clearance between adapter sleeve, shaft, and bearing bore.

Locknut Rotation for Zero Reference

Rotate locknut clockwise by specified turns based on shaft size to set zero reference point.

Field Conversion and Lubrication

Convert to Expansion Bearing

Modify Imperial IP or ISAF bearings for expansion functionality by adjusting snap rings or components.

Grease Lubrication Guidelines

Relubricate bearings with compatible NLGI #2 Lithium Complex grease as per Table 3 intervals.

Storage and Special Shutdown

Protect bearings in adverse conditions; add grease before running after storage or idle periods.

The Dodge Imperial & ISAF Bearing is a robust industrial bearing designed for reliable operation in various applications. This instruction manual details its installation, mounting, maintenance, and conversion procedures, ensuring safe and efficient use.

Function Description

The primary function of the Imperial & ISAF Bearing is to support rotating shafts, accommodating both non-expansion (fixed) and expansion (floating) applications. The bearing utilizes an adapter sleeve, locknut, and lock plate system for secure mounting onto a shaft. The non-expansion unit is typically installed first, establishing a fixed point, while the expansion unit allows for axial movement to compensate for shaft expansion or contraction. This design ensures proper alignment and reduces stress on the shaft and surrounding machinery.

Important Technical Specifications

The manual provides critical specifications for installation and maintenance:

Locknut Rotation for Zero Reference Point: This is a crucial parameter for proper mounting. The amount of clockwise rotation required from the "zero reference point" varies significantly with shaft size. For example:
- Shaft sizes 1-1/8 to 1-7/16 inches require 3/4 to 7/8 turn.
- Shaft sizes 1-5/8 to 2 inches require 7/8 to 1 turn.
- Shaft sizes 3-3/16 to 4 inches require 1 to 1-1/4 turns.
- Larger shaft sizes, such as 4-15/16 to 5-1/2 inches, require 1-3/8 to 1-5/8 turns.
- Specific 1-1/2 inch Imperial IP & ISAF bearings require 3/4 to 7/8 turn, while Imperial IP with Type E Dimensioned Housing of the same size requires 7/8 to 1 turn.
Cap Bolt Torque for ISAF Grade 5 Bolts: For ISAF bearings, the torque values for cap bolts are provided for both 2-bolt and 4-bolt bases.
- For 2-bolt bases:
  - Shaft sizes 1-7/16 to 1-11/16 inches (3/8-16 bolt) require 24-30 Ft-Lbs.
  - Shaft sizes 2-11/16 to 3 inches (5/8-11 bolt) require 120-150 Ft-Lbs.
  - Shaft sizes 4-15/16 to 7 inches (1-8 bolt) require 512-640 Ft-Lbs.
- For 4-bolt bases:
  - Shaft sizes 2-7/16 to 2-1/2 inches (1/2-13 bolt) require 60-75 Ft-Lbs.
  - Shaft sizes 3-11/16 to 4 inches (3/4-10 bolt) require 208-260 Ft-Lbs.
  - Shaft sizes 4-7/16 to 4-1/2 inches (7/8-9 bolt) require 344-430 Ft-Lbs.
Lubrication: Dodge IP and ISAF bearings are pre-packed with NLGI #2 Lithium Complex grease. The manual emphasizes the importance of using a compatible #2 Lithium Complex grease for relubrication.
Re-Lubrication Intervals: A detailed table outlines re-lubrication intervals in months based on shaft size and RPM, assuming 12 hours per day operation at 150°F. For instance:
- Bearings with shaft sizes 1-1/8 to 2 inches operating at 250 RPM require re-lubrication every 4 months, while at >3000 RPM, it's every 0.25 months.
- Bearings with shaft sizes 4-15/16 to 5-1/2 inches operating at 250 RPM require re-lubrication every 1.5 months, and at 1500 RPM, it's every 0.25 months.
- Larger bearings, such as 6-7/16 to 7 inches, require re-lubrication every 1 month at 250 RPM and every 0.25 months at 1250 RPM.

Usage Features

The bearing offers several features for ease of use and adaptability:

Non-Expansion and Expansion Units: The system allows for both fixed and floating bearing configurations, providing flexibility for various shafting arrangements and thermal expansion requirements.
Zero Reference Point: This critical installation step ensures proper seating of the adapter sleeve, shaft, and bearing bore, eliminating clearance and preventing premature wear. The manual provides a clear test involving tapping the locknut and attempting to rotate it by hand to confirm the zero reference point.
Field Conversion: Imperial IP bearings can be converted from non-expansion to expansion units by repositioning a snap ring and relabeling. ISAF bearings require removing the bearing cap and stabilizing ring, then reassembling with specified torque values.
Dismounting Procedure: A clear step-by-step process for dismounting the bearing is provided, including removing weight, mounting bolts, locknut screws, and rotating the locknut counterclockwise.

Maintenance Features

Maintenance is crucial for the longevity and performance of the bearing:

Inspection: Before installation, the shaft must be inspected for smoothness, straightness, cleanliness, and adherence to commercial tolerances.
Lubrication: Regular relubrication with compatible NLGI #2 Lithium Complex grease is essential. The manual provides detailed intervals based on operating conditions (shaft size, RPM, operating temperature, and hours per day).
Storage and Special Shutdown: For bearings exposed to harsh conditions (wet, dusty, corrosive vapors), extra protection is recommended. This involves adding grease until it shows at the seals, rotating the bearing to distribute the grease, covering the bearing, and adding fresh grease before resuming operation.
Safety Warnings: The manual emphasizes critical safety precautions, including turning off and locking out power sources before maintenance, using proper lifting practices for heavy products (over 25 kg/55 lbs), and ensuring that installation, maintenance, and operation are performed by qualified personnel familiar with the equipment and potential hazards. It also highlights the importance of following correct procedures and using appropriate safety devices.

The Dodge Imperial & ISAF Bearing is designed for robust industrial applications, with detailed instructions provided to ensure proper installation, operation, and maintenance, thereby maximizing its service life and operational safety.