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.
| 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 | ||||||||||||||||
*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 |
| 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 |
