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I-Series

I-Series

Internally geared slew rings are widely used in many medium to heavy load applications where there are design limitations and restrictions against using an external pinion, or when the outer ring surface needs to be protected for contamination and safety purposes. Standard I-series slew rings are composed of an Internal ring with straight gear teeth, an external ring, and a specific number of rolling elements in between. These can be driven through meshing with an appropriate Pinion.

Light Duty - Light Weight
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Part Number Outline Dimensions & Weight Mounting Holes Moment Rating Gear Data
Outer Ring Inner Ring
Do (in) di (in) Dr (in) Di (in) do (in) dr (in) G (lbs) Lo (in) no Li (in) ni Mt (ft-lbs) Tooth Form D2 (in) Pd z2 Fz(lbs)
I.410.120.13I.1C 20.39 12.85 17.87 16.22 16.14 - 65 19.25 8 14.88 12 22,700 FS 13.25 4 53 6,800
I.540.120.13I.1C 25.51 17.6 22.99 21.34 21.26 - 90 24.38 10 19.63 15 37,700 FS 18 4 72 6,530
I.640.120.13I.1C 29.45 21.6 26.93 25.28 25.2 - 106 28.38 12 23.63 18 49,800 FS 22 4 88 6,400
I.740.120.13I.1C 33.39 25.6 30.87 29.22 29.14 - 121 32.25 15 27.63 18 54,200 FS 26 4 104 6,300
I.840.120.13I.1C 37.32 29.133 34.8 33.15 33.07 - 148 36.25 18 31.5 18 56,500 FS 29.667 3 89 8,520
I.940.120.13I.1C 41.26 33.133 38.74 37.09 37.01 - 165 40.13 18 35.5 20 65,200 FS 33.667 3 101 8,420
I.1090.120.13I.1C 47.17 39.133 44.65 43 42.92 - 188 46 18 41.5 24 75,500 FS 39.667 3 119 8,340
Tolerances ±.040 0.03 0 Ref. Ref. Ref.
0 -0.08
Part Number Outline Dimensions & Weight Mounting Holes Moment Rating Gear Data
Outer Ring Inner Ring
Do (mm) di (mm) Dr (mm) Di (mm) do (mm) dr (mm) G (kg) Lo (mm) no Li (mm) ni Mt (kN-m) Tooth Form D2 (mm) Pd z2 Fz(kg)
I.410.120.13M.1C 517.91 326.39 453.90 411.99 409.96 - 29.48 488.95 8.00 377.95 12.00 30,781.20 FS 336.55 4.00 53.00 30,246.40
I.540.120.13M.1C 647.95 447.04 583.95 542.04 540.00 - 40.82 619.25 10.00 498.60 15.00 51,121.20 FS 457.20 4.00 72.00 29,045.44
I.640.120.13M.1C 748.03 548.64 684.02 642.11 640.08 - 48.07 720.85 12.00 600.20 18.00 67,528.80 FS 558.80 4.00 88.00 28,467.20
I.740.120.13M.1C 848.11 650.24 784.10 742.19 740.16 - 54.87 819.15 15.00 701.80 18.00 73,495.20 FS 660.40 4.00 104.00 28,022.40
I.840.120.13M.1C 947.93 739.98 883.92 842.01 839.98 - 67.12 920.75 18.00 800.10 18.00 76,614.00 FS 753.54 3.00 89.00 37,896.96
I.940.120.13M.1C 1,048.00 841.58 984.00 942.09 940.05 - 74.83 1,019.30 18.00 901.70 20.00 88,411.20 FS 855.14 3.00 101.00 37,452.16
I.1090.120.13M.1C 1,198.12 993.98 1,134.11 1,092.20 1,090.17 - 85.26 1,168.40 18.00 1,054.10 24.00 1,02,378.00 FS 1,007.54 3.00 119.00 37,096.32
Tolerances ±.040 0.03 0 Ref. Ref. Ref.
0 -0.08
Medium Duty
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  *Drawing above reflects on all Medium – Heavy Duty Slew Rings
Part Number Outline Dimensions & Weight Mounting Holes Moment Rating Gear Data
Outer Ring Inner Ring
Do (in) di (in) H (in) Hi / Ho G (lbs) Lo (in) No Bo (in) Li (in) ni Bi (in) Mt (ft-lbs) Tooth Form D2 (in) Pd z2 Fz(lbs)
I.410.120.13I.1B 19.9 12 2.2 1.8 85 18 14 1/2-13 UNC 13.5 12 0.688 50,500 FS 19.5 4 78 4,981
I.540.120.13I.1B 25.15 17 2.2 1.8 108 23.25 18 1/2-13 UNC 18.5 15 0.688 72,700 FS 24.75 4 99 5,076
I.640.120.13I.1B 29.15 21 2.2 1.8 137 27.25 20 1/2-13 UNC 22.5 18 0.688 91,800 FS 28.75 4 115 5,127
I.740.120.13I.1B 32.9 25 2.2 1.8 158 31 24 1/2-13 UNC 26.5 18 0.688 111,900 FS 32.5 4 130 5,164
I.840.120.13I.1B 37.2 28.83 2.2 1.8 188 35 28 1/2-13 UNC 30.5 20 0.688 128,000 FS 36.667 3 110 6,817
I.940.120.13I.1B 41.2 32.83 2.2 1.8 207 38.88 28 1/2-13 UNC 34.38 20 0.688 130,900 FS 40.667 3 122 6,860
I.1090.120.13I.1B 46.87 38.75 2.2 1.8 237 44.63 32 1/2-13 UNC 40.25 24 0.688 139,900 FS 46.333 3 139 6,910
Part Number Outline Dimensions & Weight Mounting Holes Moment Rating Gear Data
Outer Ring Inner Ring
Do (mm) di (mm) H (mm) Hi / Ho G (kg) Lo (mm) No Bo (mm) Li (mm) ni Bi (mm) Mt (kN-m) Tooth Form D2 (mm) Pd z2 Fz(lbs)
I.410.120.13M.1B 505.46 304.80 55.88 45.72 38.55 457.20 14.00 M12 342.90 12.00 17.48 68,478.00 FS 495.30 4.00 78.00 22,155.49
I.540.120.13M.1B 638.81 431.80 55.88 45.72 48.98 590.55 18.00 M12 469.90 15.00 17.48 98,581.20 FS 628.65 4.00 99.00 22,578.05
I.640.120.13M.1B 740.41 533.40 55.88 45.72 62.13 692.15 20.00 M12 571.50 18.00 17.48 1,24,480.80 FS 730.25 4.00 115.00 22,804.90
I.740.120.13M.1B 835.66 635.00 55.88 45.72 71.65 787.40 24.00 M12 673.10 18.00 17.48 1,51,736.40 FS 825.50 4.00 130.00 22,969.47
I.840.120.13M.1B 944.88 732.28 55.88 45.72 85.26 889.00 28.00 M12 774.70 20.00 17.48 1,73,568.00 FS 931.34 3.00 110.00 30,322.02
I.940.120.13M.1B 1,046.48 833.88 55.88 45.72 93.87 987.55 28.00 M12 873.25 20.00 17.48 1,77,500.40 FS 1,032.94 3.00 122.00 30,513.28
I.1090.120.13M.1B 1,190.50 984.25 55.88 45.72 107.48 1,133.60 32.00 M12 1,022.35 24.00 17.48 1,89,704.40 FS 1,176.86 3.00 139.00 30,735.68
Heavy Duty
Part Number Outline Dimensions & Weight Mounting Holes Moment Rating Gear Data
Outer Ring Inner Ring
Do (in) di (in) H (in) Hi / Ho G (lbs) Lo (in) No Bo (in) Li (in) ni Bi (in) Mt (ft-lbs) Tooth Form D2 (in) Pd z2 Fz(lbs)
I.763.132.13I.1B 36 24.16 3.5 3 411 33.25 24 0.813 27.25 30 3/4-10 UNC 340,000 FS 24.8 2.5 62 21,783
I.915.132.13I.1B 42 30.16 3.5 3 517 39.25 28 0.813 33.25 32 3/4-10 UNC 395,700 FS 30.8 2.5 77 21,195
I.1068.132.13I.1B 48 36.16 3.5 3 580 45.25 32 0.813 39.25 36 3/4-10 UNC 457,000 FS 36.8 2.5 92 20,819
I.1220.132.13I.1B 54 42.16 3.5 3 689 51.25 36 0.813 45.25 40 3/4-10 UNC 517,900 FS 42.8 2.5 107 20,548
I.1372.132.13I.1B 60 48.16 3.5 3 775 57.25 40 0.813 51.25 44 3/4-10 UNC 578,400 FS 48.8 2.5 122 20,344
I.1525.132.13I.1B 66 54.16 3.5 3 842 63.25 44 0.813 57.25 48 3/4-10 UNC 638,800 FS 54.8 2.5 137 20,185
Part Number Outline Dimensions & Weight Mounting Holes Moment Rating Gear Data
Outer Ring Inner Ring
Do (mm) di (mm) H (mm) Hi / Ho G (kg) Lo (mm) No Bo (mm) Li (mm) ni Bi (mm) Mt (kN-m) Tooth Form D2 (mm) Pd z2 Fz(kg)
I.763.132.13M.1B 914.40 613.66 88.90 76.20 186.39 844.55 24.00 20.65 692.15 30.00 M20 4,61,040.00 FS 629.92 2.50 62.00 96,890.78
I.915.132.13M.1B 1,066.80 766.06 88.90 76.20 234.46 996.95 28.00 20.65 844.55 32.00 M20 5,36,569.20 FS 782.32 2.50 77.00 94,275.36
I.1068.132.13M.1B 1,219.20 918.46 88.90 76.20 263.03 1,149.35 32.00 20.65 996.95 36.00 M20 6,19,692.00 FS 934.72 2.50 92.00 92,602.91
I.1220.132.13M.1B 1,371.60 1,070.86 88.90 76.20 312.46 1,301.75 36.00 20.65 1,149.35 40.00 M20 7,02,272.40 FS 1,087.12 2.50 107.00 91,397.50
I.1372.132.13M.1B 1,524.00 1,223.26 88.90 76.20 351.46 1,454.15 40.00 20.65 1,301.75 44.00 M20 7,84,310.40 FS 1,239.52 2.50 122.00 90,490.11
I.1525.132.13M.1B 1,676.40 1,375.66 88.90 76.20 381.85 1,606.55 44.00 20.65 1,454.15 48.00 M20 8,66,212.80 FS 1,391.92 2.50 137.00 89,782.88
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