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METRIC Miniature Ball Bearings (Seals, Shielded or Open)
STAINLESS/CHROME/CERAMIC
ANGULAR
CONTACT/RADIAL

METRIC Flanged Bearings (Seals, Shielded , Open)
STAINLESS/CHROME/CERAMIC
ANGULAR
CONTACT/RADIAL

INCH Miniature Ball Bearings
(Flanged & Extended Inner)
STAINLESS/CHROME/CERAMIC
ANGULAR
CONTACT/RADIAL

METRIC Angular Contact Bearings
(Series 7000 to 7300)
STAINLESS, CERAMIC or CHROME

METRIC Deep Groove Radial Ball Bearings (Series 6000, 6200, 6300, 6700, 6800, 6900 and 16000) STAINLESS, CERAMIC or CHROME

METRIC Radial Ball Bearings MAX
(Series M6200, M6300)
Loading slot for MAX # Balls

Deep Groove Ball Bearings
INCH

STAINLESS, CERAMIC or CHROME

INCH Semi-Precision Bearings
(Series 3000)
STAINLESS, CERAMIC or CHROME

Thin Section Ball Bearings
(X, C and A Types)
STAINLESS, CERAMIC or CHROME
Spherical Roller Thrust Bearings
STAINLESS, CERAMIC or CHROME
Self-Aligning Ball Bearings
STAINLESS, CERAMIC or CHROME
Cylindrical Roller Bearings (NEW)
STAINLESS, CERAMIC or CHROME
Spherical Roller Bearings
STAINLESS, CERAMIC or CHROME
Tapered Roller Bearings - METRIC
STAINLESS, CERAMIC or CHROME
Needle Bearings
STAINLESS, CERAMIC or CHROME
Deep Groove Ball Bearings
METRIC

STAINLESS, CERAMIC or CHROME
THRUST Bearings (Ball/Roller)
STAINLESS, CERAMIC or CHROME

Rounded O.D. Bearings
(used for Track Rollers)

Agricultural Bearings

Mounted Units (Pillow Blocks)
2 Bolt, 3 Bolt, and 4 Bolt Units

Drawn Cup Needle Roller Bearings
Rod Ends
Aircraft Bearings
bearings_icon Engineering Data
bearings_icon Glossary of Bearings

Slewing Bearings - RK Series

Kaydon's MT series heavy duty slewing ring bearings offer Slewinfinite® solutions for applications such as truck mounted cranes, hoists, and non-precision industrial tables and positioners, providing optimal economy and capacity for a given envelope dimension.

Design features
MT Series slewing ring bearings have a rectangular cross-section and range in size from 4–47 inches OD (100–1200 mm). The internal configuration consists of deep groove gothic arch raceways and maximum ball complement. This results in a four-point contact design that provides exceptional moment, thrust, and radial load capacities. Integral face riding seals for the larger sizes, and non-contact shields for the smaller, assist in the exclusion of contaminants. These features make MT series heavy duty slewing rings an ideal choice for a wide range of applications from light to heavy duty.

MT series slewing ring bearings are offered in nongeared (MTO) and externally geared (MTE) configurations. The gears are Fellows Stub Involute up to the MTE-324 size and Stub Involute for larger sizes, all manufactured to AGMA Class Q6 quality. MT series slewing bearings feature ball pitch diameters from 9" to 40" and moment load ratings up to 870,000 ft.-lbs.

Availability
MT series slewing rings are generally available from stock, and mating pinions for the geared versions through MTE-705 are also generally available.

Applications
MT series slewing rings have been used successfully in a wide range of applications from light to heavy duty. The smaller sizes are well suited for:

  • Manipulators
  • Jib cranes
  • Lift-assist devices
  • Work positioners

Larger sizes are well suited for:

  • Truck-mounted cranes
  • Aerial lifts
  • Hoists
  • Small wind turbines
  • Non-precision positioning tables

 


No gear
Kaydon
part
number
Outline dimensions & weight Mounting holes Gear data
inv. stub, α = 20°
Moment
rating
Crm
(ft-lbs)
Do
(in)
di
(in)
Dr
(in)
Di
(in)
do
(in)
dr
(in)
G
approx.
(lbs)
Outer ring Inner ring
Lo
(in)
no Li
(in)
ni D2
(in)
Pd z2 Fz
(lbs)
RK6-16P1Z 20.390 11.970 17.870 16.220 16.140 14.490 58 19.250 8 13.130 12 - - - - 22,700
RK6-22P1Z 25.510 17.090 22.990 21.340 21.260 19.610 76 24.380 12 18.130 15 - - - - 37,700
RK6-25P1Z 29.450 21.030 26.930 25.280 25.200 23.550 89 28.380 12 22.130 18 - - - - 49,800
RK6-29P1Z 33.390 24.970 30.870 29.220 29.140 27.490 104 32.250 15 26.130 18 - - - - 54,200
RK6-33P1Z 37.320 28.900 34.800 33.150 33.070 31.420 118 36.250 18 30.000 18 - - - - 56,500
RK6-37P1Z 41.260 32.840 38.740 37.090 37.010 35.360 132 40.130 18 34.000 20 - - - - 65,200
RK6-43P1Z 47.170 38.750 44.650 43.000 42.920 41.270 153 46.000 18 39.880 24 - - - - 75,500
Tolerances ±.040 ±.040 +.000
-.080
Ref. Ref. +.080
-.000
                   

 

Kaydon Bearings - RK series turntable profile - internal gear
Internal gear
Kaydon
part
number
Outline dimensions & weight Mounting holes Gear data
inv. stub, α = 20°
Moment
rating
Crm
(ft-lbs)
Do
(in)
di
(in)
Dr
(in)
Di
(in)
do
(in)
dr
(in)
G
approx.
(lbs)
Outer ring Inner ring
Lo
(in)
no Li
(in)
ni D2
(in)
Pd z2 Fz
(lbs)
RK6-16N1Z 20.390 12.850 17.870 16.220 16.140 - 65 19.250 8 14.880 12 13.250 4 53 6800 22,700
RK6-22N1Z 25.510 17.600 22.990 21.340 21.260 - 90 24.380 10 19.630 15 18.000 4 72 6530 37,700
RK6-25N1Z 29.450 21.600 26.930 25.280 25.200 - 106 28.380 12 23.630 18 22.000 4 88 6400 49,800
RK6-29N1Z 33.390 25.600 30.870 29.220 29.140 - 121 32.250 15 27.630 18 26.000 4 104 6300 54,200
RK6-33N1Z 37.320 29.133 34.800 33.150 33.070 - 148 36.250 18 31.500 18 29.667 3 89 8520 56,500
RK6-37N1Z 41.260 33.133 38.740 37.090 37.010 - 165 40.130 18 35.500 20 33.667 3 101 8420 65,200
RK6-43N1Z 47.170 39.133 44.650 43.000 42.920 - 188 46.000 18 41.500 24 39.667 3 119 8340 75,500
Tolerances ±.040 +.030
-.000
+.000
-.080
Ref. Ref. Ref.                    

 

Kaydon Bearings - RK series turntable profile - external gear
External gear
Kaydon
part
number
Outline dimensions & weight Mounting holes Gear data
inv. stub, α = 20°
Moment
rating
Crm
(ft-lbs)
Do
(in)
di
(in)
Dr
(in)
Di
(in)
do
(in)
dr
(in)
G
approx.
(lbs)
Outer ring Inner ring
Lo
(in)
no Li
(in)
ni D2
(in)
Pd z2 Fz
(lbs)
RK6-16E1Z 19.900 11.970 - 16.220 16.140 14.490 72 18.000 8 13.130 12 19.500 4 78 5,560 22,700
RK6-22E1Z 25.150 17.090 - 21.340 21.260 19.610 96 23.250 12 18.130 15 24.750 4 99 5,650 37,700
RK6-25E1Z 29.150 21.030 - 25.280 25.200 23.550 115 27.250 15 22.130 18 28.750 4 115 5,700 49,800
RK6-29E1Z 32.900 24.970 - 29.220 29.140 27.490 128 31.000 18 26.130 18 32.500 4 130 5,740 54,200
RK6-33E1Z 37.200 28.900 - 33.150 33.070 31.420 152 35.000 18 30.000 18 36.667 3 110 7,580 56,500
RK6-37E1Z 41.200 32.840 - 37.090 37.010 35.360 172 38.880 18 34.000 20 40.667 3 122 7,620 65,200
RK6-43E1Z 46.867 38.750 - 43.000 42.920 41.270 189 44.630 20 39.880 24 46.333 3 139 7,680 75,500
Tolerances +.000
-.030
±.040 Ref. Ref. Ref. +.080
-.000
                   

 

Kaydon Bearings - RK series turntable profile - mating pinions
Mating pinions
Bearing
part
number
Pinion
part
number
Gear data ( α = 20°) Outline dimensions & weight
Tooth
form
z1 Pd
(in)
b1
(in)
L1
(in)
D1
(in)
Do1
(in)
Dr1
(in)
Di1
(in)
w
(in)
G
approx.
(lbs)
RK6-16 thru
RK6-29
39200001
39200002
SD 14
17
4
4
2.000
2.000
2.880
2.880
3.500
4.250
3.900
4.650
2.880
3.630
1.000
1.000
1/4 6.4
10.0
RK6-33 thru
RK6-43
39200003
39200004
SD 14
17
3
3
2.000
2.000
2.880
2.880
4.667
5.667
5.200
6.200
3.880
4.880
1.250
1.250
5/16 11.4
18.3
Tolerances     Ref. ±.015 ±.015 Ref. +.000
-.010
Ref. +.002
-.000
   

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