Rexnord Planetgear 7000, Owner'S Manual

Owners Manual • Rexnord

®

 Planetgear

™

 7000 Speed Reducers

(Page 3 of 33)

  Size Mercury/Mars

158-110     

10/21 (Supersedes 01/15)

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WELDING

 — Do not weld on the gear drive or accessories 

without prior approval from the Factory. Welding on the 

drive may cause distortion of  the housing or damage to the 

bearings and gear teeth. Welding without prior approval 

could void the warranty.

EFFECTS OF SOLAR ENERGY

 — Special measures 

should be taken to protect drives operating in direct 

sunlight at ambient temperatures over 100°F (38°C). 

This protection can consist of  a canopy over the drive or 

reflective paint on the drive. If  neither is possible, a heat 

exchanger or other cooling device may be required to 

prevent the reducer sump temperature from exceeding the 

allowable maximum oil temperature of  200°F (93°C).

2.1  HANDLING OF SPEED REDUCER

Disconnect all mounting bolts from the reducer before 

lifting. Use a double rope sling of  ample strength, wrapped 

around the input and the output shafts when lifting the 

speed reducer; reference 

Figure 2.1

. Reference 

Table 

18

 (Page 29) for reducer weights. Be sure the reducer is 

properly secured and balanced to prevent shifting during 

suspension.

WARNING

: To avoid personal injury or product damage, 

never attempt to lift the reducer with an eyebolt threaded 

into the top of  the reducer maincase.

2.2  REDUCER MOUNTING

It is essential that the speed reducer be securely bolted to 

a solid, level, and vibration free foundation.
If  the reducer mounting surface is not horizontal, refer 

to 

Table 19

 (Page 29) for Maximum Allowable Tilts for 

Standard Reducers.

NOTE: If  the reducer is tilted,the oil requirements may 

change.

Bolts should be of  the correct size to fit mounting holes. 

They should be SAE Grade 5 or equivalent (Grade 8.8 

or better for metric applications). Fasteners shall be 

torqued according to 

Table 18

 (Page 29). The use of  a 

rigid structural steel base-plate is strongly recommended 

as a foundation. If  a concrete foundation is used, grout 

structural steel mounting pads into the concrete rather 

than grouting the reducer directly into the concrete. Allow 

the concrete to cure before torquing the reducer mounting 

bolts down.
Align the reducer with driven equipment by placing broad 

flat shims underneath all mounting pads of  the reducer. 

Start at the low speed end and level across the length 

and width of  the reducer. Check with a feeler gauge to 

make certain there is no clearance and that all pads are 

supported to prevent distortion of  housing when reducer is 

bolted down. After the reducer has been aligned with the 

driven equipment and bolted down, align prime mover to 

the reducer input shaft. If  the reducer is received coupled 

to a motor, it has been aligned properly at the factory. 

However, because alignment may have been disturbed 

during shipment, it is best to check alignment and then 

realign if  necessary. The reliability and long life of  the 

reducer requires careful installation of  accessories and 

accurate alignment of  the connecting shafts. Check final 

alignment of  motor shaft, coupling, and reducer shaft after 

reducer is in final working position.

Section II — Installation

DOUBLE ROPE

SLING

Figure 2.1 Reducer Handling