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Falk

®

 Ultramite

®

 • Installation & Maintenance Instructions

 

Type UJ • Sizes 302 thru 312 

(Page 1 of 15)

rexnord.com 

 

GR3-016

866-REXNORD/866-739-6673 (Within the U.S.) 

08/20 (Supersedes 01/18)

414-643-2366 (Outside the U.S.) 

© Rexnord Corporation. All Rights Reserved.

How to Use This Manual

This manual provides detailed instructions on installation and 
maintenance of gear drives and couplings. Use the table of 
contents below to locate required information.

CAREFULLY FOLLOW THE INSTRUCTIONS IN THIS 
MANUAL FOR OPTIMUM PERFORMANCE AND TROUBLE 
FREE SERVICE. 

Table of Contents

Drive Assembly Instructions   . . . . . . . . . . . . . . . . . . . . . . . . Page 2 
Fastener Tightening Torques  . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
Shaft Connections  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
Retaining Methods for Shaft Mounted Drives  . . . . . . . . . . . . Page 9
Lubrication Recommendations   . . . . . . . . . . . . . . . . . . . . . . Page 10
Extreme Pressure (EP) Lubricants  . . . . . . . . . . . . . . . . . . . . Page 10
Oil Levels  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 10
Lubricant Changes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11
Mounting Positions   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13
Preventive Maintenance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15
Bearing Grease  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15
Stored & Inactive Gear Drives   . . . . . . . . . . . . . . . . . . . . . . . Page 15

Introduction

Credit for long service and dependable operation of a gear drive 
is often given to the engineers who designed it, or the craftsmen 
who constructed it, or the sales engineer who recommended 
the type and size. Ultimate credit belongs to the mechanic on 
the job who worked to make the foundation rigid and level, 
who accurately aligned the shafts and carefully installed the 
accessories, and who made sure that the drive received 
lubrication at prescribed intervals. The details of this important 
job are the subject of this manual.

NAMEPLATE — 

Operate gear drives only at horsepower, speed 

and ratio shown on nameplate and in the mounting position for 
which it was ordered. Before changing any one of these, submit 
complete nameplate data and new application conditions to the 
Factory for correct oil level, parts and application approval.

WARNING: 

Consult applicable local and national safety codes 

for proper guarding of rotating members. Lock out power source 
and remove all external loads from drive before servicing drive or 
accessories.

Warranty

Rexnord Industries, LLC (the “Company”) warrants that Ultramite 
gear drives (I) conform to Company’s published specifications, 
and (II) are free from defects of material for three years from the 
date of shipment.
Company does not warrant any non-Company branded products 
or components (manufacturer’s warranty applies) or any defects 
in, damage to, or failure of products caused by: (I) dynamic 
vibrations imposed by the drive system in which such products 
are installed unless the nature of such vibrations has been 
defined and accepted in writing by Company as a condition of 
operation; (II) failure to provide suitable installation environment; 
(III) use for purposes other than those for which designed, or other 
abuse or misuse; (IV) unauthorized attachments, modifications or 
disassembly, or (V) mishandling during shipping.

General Information

The following instructions apply to standard Falk Type UJ drives 
shown above. If a drive is furnished with special features, refer to 
the supplementary instructions shipped with the drive.

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 — 

If the gear drive operates in 

the sun at ambient temperatures over 100°F (38°C), then special 
measures should be taken to protect the drive from solar energy. 
This protection can consist of a canopy over the drive or reflective 
paint on the drive. If neither is possible, consult the Factory.

MOUNTING (Figure 13 and 19) — 

Unit sizes 308UJ and above 

are furnished without oil. Refer to Table 16 for a list of typical 
lubricants meeting Rexnord specifications. Fill drives to the oil 
level plug. Refer to Table 11 for the approximate quantities of oil 
by the drive mounting position. 
Unit sizes 307UJ and below are factory filled with oil. Refer to 
Figure 13 and 19 for the placement of the breather, drain and oil 
level plugs based on the drive mounting position. 

FOUNDATION GENERAL — 

To facilitate oil drainage, elevate the 

gear drive foundation above the surrounding floor level. If desired, 
replace the drive oil drain plug with a valve, but provide a guard to 
protect the valve from accidental opening or breakage.

FOUNDATION, STEEL — 

When mounting gear drive on structural 

steel, it is recommended that an engineered design be utilized 
for a pedestal, adapter base or bed to provide sufficient rigidity, 
to prevent induced loads from distorting the housing and causing 
gear misalignment. In the absence of an engineered design, it is 
recommended that a base plate, with thickness equal to or greater 
than the thickness of the drive feet, be securely bolted to steel 
supports and extend under the entire drive.

FOUNDATION, CONCRETE — 

If a concrete foundation is used, 

allow the concrete to set firmly before bolting down the gear drive. 
For the best type of mounting, grout 
structural steel mounting pads into 
the mounting base, as illustrated, 
rather than grouting the drive 
directly into the concrete.

Motors and other components mounted on motor plates 
may become misaligned during shipment. ALWAYS check 
alignment after installation.

Type UJ

Summary of Contents for Falk Ultramite UJ 302

Page 1: ... defined and accepted in writing by Company as a condition of operation II failure to provide suitable installation environment III use for purposes other than those for which designed or other abuse or misuse IV unauthorized attachments modifications or disassembly or V mishandling during shipping General Information The following instructions apply to standard Falk Type UJ drives shown above If ...

Page 2: ...ic housing high speed motor adapter and electric motor use Loctite 7070 Super Clean or equivalent Check for and remove any burrs from mating surfaces 4 If unit size is 308UJ or larger fill basic housing with lube type as specified in Table 13 Page 11 to the oil level plug Refer to Table 11 Page 10 for the approximate quantities of oil by the drive mounting shaft 5 Apply anti fretting compound Dow ...

Page 3: ... backing bolt nut and flat washer required Table 2 Removal Backing Bolt Data Solid Shaft DRIVE SIZE Removal Bolt Size Minimum Length Inches Maximum Tightening Torque lb ft Nm Backing Bolt Size Maximum Length Inches 302 375 16 UNC x 1 00 37 50 375 16 UNC x 1 25 304 375 16 UNC x 1 00 37 50 375 16 UNC x 1 25 306 625 11 UNC x 1 50 183 248 625 11 UNC x 1 75 307 750 10 UNC x 1 75 330 448 750 10 UNC x 2 ...

Page 4: ...TI SEIZE OR LUBRICATING COMPOUNDS 5 Tighten nut as instructed in one of the following methods PREFERRED METHOD Using a spanner Table 4 chain or pipe wrench tighten bushing nut to the torque value specified in Table 4 Note For applications where external vibratory or transient loads may act on drive and cause setscrews to become loose apply Loctite 243 or equivalent to threads of setscrew Tighten s...

Page 5: ...orrosive environments consideration should be given to use of an anti seize compound on rod end threads ROD CLEVIS HARDWARE ROD CLEVIS FASTENER GEAR DRIVE HOUSING ROD CLEVIS TURN BUCKLE JAM NUTS ROD ENDS ANCHOR HARDWARE TORQUE ARM ANCHOR Figure 7 2 Thread jam nuts on rod ends far enough to allow for assembly of the turnbuckle Install rod ends into turnbuckle so that length of threads exposed in tu...

Page 6: ...essary to heat the rod clevis using a torch to loosen rod clevis fastener 3 Remove rod clevis from torque arm loosen jam nuts and remove rod ends from turnbuckle SCREW CONVEYOR INSTALLATION AND REMOVAL INSTRUCTIONS Installation 1 Separate contents from drive shaft kit Install thrust plate and retaining ring in hollow shaft as illustrated in Figure 9 For sizes 302UJ and 304UJ drives with either 2 4...

Page 7: ...uctions DRIVE SHAFT KEY RETAINING RING THRUST PLATE FASTENER THRUST PLATE HOLLOW SHAFT SEAL HOUSING WINDOWS SEAL HOUSING TROUGH END FASTENERS DRIVE SHAFT SEAL HOUSING FASTENERS WASTE PACKING Figure 11 Table 7 Seal Housing Trough End Fastener Data Non Lubricated Fasteners DRIVE SIZE Seal Housing Fasteners Trough End Fasteners Size Torque lb ft Nm 1 500 Dia Drive Shaft 2 000 2 437 Dia Drive Shafts 3...

Page 8: ...king Seal or b Lip Seal Proceed as follows for removal of drive shaft from seal housing a Waste Packing Seal Figure 11 Page 7 Remove key from drive shaft keyway Remove waste packing material and remove seal housing toward tapered end of drive shaft b Lip Seal Figure 10 Page 6 Remove key from drive shaft keyway Remove any burrs from tapered end of shaft and wrap entire length with masking tape or a...

Page 9: ...ng Rexnord specifications refer to appropriate coupling service manual GAP AND ANGULAR ALIGNMENT If possible after mounting coupling hubs position the driving and driven equipment so that the distance between shaft ends is equal to the coupling gap Align the shafts by placing a spacer block equal in thickness to required gap between hub faces as shown and also at 90 intervals around the hub Check ...

Page 10: ...s WARNING SYNTHETIC LUBRICANTS IN FOOD PROCESSING INDUSTRY Synthetic lubricants may contain toxic substances and should not be used in the food processing industry without the lubricant manufacturer s approval Lubricants which meet NSF H1 classification are suitable for food processing applications Oil Levels Unit sizes 308UJ and above are furnished without oil Oil levels are determined by drive m...

Page 11: ... fatty and EP additives To prevent damage to the drive through lubricant breakdown the oil should be changed at the intervals shown in Table 12 Oil Change Intervals Intervals shown are for oil temperatures when the drive has attained normal running temperature when operating under load These intervals are based on normal running Where conditions are particularly severe it may be necessary to chang...

Page 12: ...n will not remove all grease and cross contamination will likely occur Refer to gear drive assembly disassembly instructions Grease registered as H1 by NSF National Sanitation Foundation is suitable for food processing Table 14 Conventional NLGI 2 Grade Greases for Grease Lubricated Bearings Grease Purged Seals 18 to 93 C 0 to 200 F Manufacturer Lubricant Chevron Texaco Caltex Multifak EP 2 Citgo ...

Page 13: ...ord Corporation All Rights Reserved OIL LEVEL OIL FILL OIL DRAIN BREATHER MOUNTING 1 MOUNTING 2 MOUNTING 3 MOUNTING 4 MOUNTING 5 MOUNTING 6 Figure 13 Oil Service Location Double and Triple NOTE 302UJ and 304UJ sizes ship fully sealed and lubricated for life and do not have oil drain plugs OIL LEVEL OIL FILL OIL DRAIN BREATHER MOUNTING 1 MOUNTING 2 MOUNTING 3 MOUNTING 4 MOUNTING 5 MOUNTING 6 Mounti...

Page 14: ...on All Rights Reserved 414 643 2366 Outside the U S MOUNTING 1 MOUNTING 2 A MOUNTING 3 B MOUNTING 4 MOUNTING 5 MOUNTING 6 VIEW B VIEW A Figure 14 Oil Service Location Quadruple and Quintuple OIL LEVEL OIL FILL OIL DRAIN BREATHER MOUNTING 1 MOUNTING 2 MOUNTING 3 MOUNTING 4 MOUNTING 5 MOUNTING 6 NOTE 302UJ and 304UJ sizes ship fully sealed and lubricated for life and do not have oil drain plugs ...

Page 15: ...ive Gear Drives Each gear drive is protected with rust preventive that will protect parts against rust for a period of 6 months in an indoor dry shelter If a gear drive is to be stored or is inactive after installation beyond the above periods drain oil from housing and spray all internal parts with a rust preventive oil that is soluble in lubricating oil or add Motorstor vapor phase rust inhibito...

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