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Nexen RPG25A-GE486T 966740 User Manual

Page 16

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FORM NO. L-21235-G-0413

16

DISENGAGING THE ROLLER PINION

1. De-couple the load from the RPS system.

2. Disconnect the power source, ensuring that no torque

is applied to the roller pinion.

3. Remove pinion preload by loosening the preload

mechanism sliding bolts slightly and then turning the
preload application screw(s) to remove the pinion
preload. You should be able to slightly separate the
pinion from the rack teeth now.

There are two pinion mounting styles; shaft mount,

and flange mount. Proceed to the following section

that applies to you.

Shaft Mount Pinion Removal

1. Progressively loosen non-adjacent coupling fasteners

in the same order they were tightened until all are
removed from the coupling (Refer to Figure 12).

2. Insert the coupling fasteners into the threaded holes

in the coupling flange and alternately tighten them as
illustrated in Figure 9 to release the locking action of
the coupling.

3. Lift the servo/reducer/preload mechanism assembly

from the rack or slide the servomotor/reducer out of
the pinion bore.

4. Inspect the shaft, and all coupling components and

replace any that show excessive wear if the pinion will
be reinstalled. Contact Nexen for replacements.

Flange Mount Pinion Removal

1. Remove mounting bolts in an alternating cross pattern.

2. Carefully inspect the mounting bolts and pinion and

flange surfaces for any signs of damage and repair or
replace as necessary if reinstalling.

WARNING

Failure to properly support the load

before disengaging the RPS system

could cause serious harm to operators

or equipment.

RPS SYSTEM OPERATION

DANGER

This product has moving parts that

can crush or cut appendages. Provide

adequate spacing or guarding from any

operating product.

WARNING

Use appropriate guarding for rotating
components. Failure to guard could
result in serious bodily injury.

WARNING

Ensure proper guarding of the product is

used. Nexen recommends the machine builder

design guarding in compliance with OSHA 29

CFR 1910 “Occupational Safety and Health

Hazards”.

WARNING

Never exceed maximum operating speeds

listed for your product. (See Table 7).

TABLE 7

RPS Maximum Speeds*

Product

Linear Speed

Pinion RPM

RPS10

4 m/s

[13.1 ft/s]

2400

RPS12

8 m/s

[26.3 ft/s]

4000

RPS16

4 m/s

[13.1 ft/s]

1500

RPS20

5 m/s

[16.4 ft/s]

1500

RPS25

8 m/s

[26.2 ft/s]

1920

RPS32

11 m/s

[36.1 ft/s]

1719

RPS40

6 m/s

[19.7 ft/s]

750

RPS4014

6 m/s

[19.7 ft/s]

643

RPS50

6 m/s

[19.7 ft/s]

600

* Standard RPS speed ratings, specials can vary. Review

Nexen specifications for your specific product number.