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Kaydon slewing bearings

DT series

The DT series features the eight-point ball bearings Kaydon originally developed to provide maximum load capacity for given envelope and bolt circle diameters. DT series slewing ring bearings provides an up to 80% increase in capacity over single-row four-point designs of the same diameter and bolt circles. Yet the DT series has a smaller profile than a three-row roller design.

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Specifications

No gear
Internal gear
External gear
Notes & related items

Design features
The internal configuration consists of two deep groove gothic arch raceways, each with a maximum ball complement, located in both the inner and outer rings. This results in a total of eight surfaces where the balls may contact at any time, providing exceptional moment, thrust, and radial load capacities. Through precise manufacturing, the raceways are closely matched to provide a high degree of load sharing. Integral seals are provided to assist in the exclusion of contaminants.

Availability
DT series bearings are made to order with a fully customizable hole pattern for bearing retention, and an internal or external gear or other drive mechanism.

Applications
DT series bearings have been used successfully in heavy-duty applications including:

Large excavators
Large cranes
Mining equipment
Wind turbines
Telescopes

See glossary of symbols

No gear
Kaydon part number	Load chart	Outline dimensions & weight								Mounting holes						Gear data α = 20°						Max gear tooth load F_z (lbs)	Moment rating C_rm (ft-lbs)
		D_o (in)	d_i (in)	H (in)	H_o (in)	H_i (in)	D_r* (in)	d_r* (in)	G approx. (lbs)	Outer ring			Inner ring			Gear data α = 20°
		D_o (in)	d_i (in)	H (in)	H_o (in)	H_i (in)	D_r* (in)	d_r* (in)	G approx. (lbs)	L_o (in)	n_o	B_o (in)	L_i (in)	n_i	B_i (in)	Tooth form	D₂ (in)	P_d or (m)	z₂	x₂	b₂ (in)
†16282001		20.375	12.250	4.500	4.185	4.185	-	-	210	18.875	20	0.688	13.625	20	0.688	-	-	-	-	-	-	-	102,500
†16283001		29.750	18.620	7.000	6.500	6.551	-	-	645	27.875	34	0.813	20.375	32	0.813	-	-	-	-	-	-	-	363,100
†16284001		41.417	30.236	7.480	6.890	6.890	-	-	1,060	39.449	36	0.866	32.205	36	0.866	-	-	-	-	-	-	-	734,800
†16015001		56.250	43.750	6.750	6.380	6.380	-	-	1,520	53.630	36	1.313	46.380	36	1 1/4-7	-	-	-	-	-	-	-	2,083,600
†16285001		75.750	59.750	8.750	8.375	8.375	-	-	3,540	73.625	48	1.004	62.375	36	1.250	-	-	-	-	-	-	-	2,934,900
†16286001		131.000	114.000	8.000	7.500	7.500	-	-	6,950	127.000	64	1.313	118.000	64	1.313	-	-	-	-	-	-	-	5,666,800
†13004001		170.000	150.000	9.875	9.250	9.250	-	-	11,950	166.000	64	1.625	154.000	64	1.625	-	-	-	-	-	-	-	8,098,000
* No internal or external diameters for this type

See glossary of symbols

Internal gear
Kaydon part number	Load chart	Outline dimensions & weight								Mounting holes						Gear data α = 20°						Max gear tooth load F_z (lbs)	Moment rating C_rm (ft-lbs)
		D_o (in)	d_i (in)	H (in)	H_o (in)	H_i (in)	D_r* (in)	d_r (in)	G approx. (lbs)	Outer ring			Inner ring			Gear data α = 20°
		D_o (in)	d_i (in)	H (in)	H_o (in)	H_i (in)	D_r* (in)	d_r (in)	G approx. (lbs)	L_o (in)	n_o	B_o (in)	L_i (in)	n_i	B_i (in)	Tooth form	D₂ (in)	P_d or (m)	z₂	x₂	b₂ (in)
†16274001		56.693	43.661	5.472	5.118	5.118	-	46.142	1,200	54.724	48	0.866	48.425	48	0.866	FD	44.094	(14)	80	-.5	4.134	48,640	1,225,400
†16275001		66.000	47.600	8.000	7.625	7.625	-	50.125	2,820	63.000	42	1.625	53.000	45	1.625	SD	48.667	1.5	73	0	5.500	78,680	3,921,100
†16276001		70.500	50.200	8.625	8.312	8.312	-	52.125	3,700	67.625	36	1 1/2-6	55.000	40	1.625	SD	51.000	2	102	0	5.000	56,400	4,863,400
†16277001		81.890	65.248	5.591	5.197	5.197	-	67.520	2,460	78.740	54	1.299	70.866	54	1.299	FD	65.669	(12)	139	-.5	3.937	41,140	2,534,900
†16278001		94.173	77.008	7.126	6.732	6.732	-	79.291	3,410	90.787	60	1.535	82.677	60	1.535	FD	77.480	(12)	164	-.5	3.937	40,770	3,896,200
†16279001		109.375	87.170	9.312	8.937	8.000	-	87.170	7,100	102.953	66	1.593	93.504	66	1.593	FD	87.874	(18)	124	-.5	6.000	94,870	9,075,400
†16280001		121.000	98.400	8.750	8.438	8.438	-	102.250	7,440	117.000	72	1.625	105.000	72	1.625	FD	100.000	1.25	125	0	6.000	106,940	8,751,800
†16281001		141.000	114.941	11.180	10.000	10.430	-	120.710	14,850	133.661	90	1.625	124.252	90	1.625	FD	116.221	(18)	165	-.5	10.000	155,340	12,625,000
* No external diameters for this type

See glossary of symbols

External gear
Kaydon part number	Load chart	Outline dimensions & weight								Mounting holes						Gear data α = 20°						Max gear tooth load F_z (lbs)	Moment rating C_rm (ft-lbs)
		D_o (in)	d_i (in)	H (in)	H_o (in)	H_i (in)	D_r (in)	d_r* (in)	G approx. (lbs)	Outer ring			Inner ring			Gear data α = 20°
		D_o (in)	d_i (in)	H (in)	H_o (in)	H_i (in)	D_r (in)	d_r* (in)	G approx. (lbs)	L_o (in)	n_o	B_o (in)	L_i (in)	n_i	B_i (in)	Tooth form	D₂ (in)	P_d or (m)	z₂	x₂	b₂ (in)
†16258001		17.086	10.250	3.313	3.000	3.000	17.086	-	105	15.354	18	0.563	11.614	24	0.563	FS	16.800	5/7	84	0	1.750	6,850	65,200
†16264001		50.016	38.504	5.512	5.157	4.567	48.425	-	870	46.496	42	M24x3	40.551	48	1.024	FD	49.134	(8)	156	+.5	3.346	19,390	970,400
†16265001		56.240	41.370	7.125	6.688	6.688	54.675	-	1,730	52.000	30	1.313	44.000	30	1.313	SD	55.600	2.5	139	0	4.000	30,480	2,132,100
†16266001		68.800	51.250	7.375	6.875	7.000	68.800	-	2,850	64.250	36	1.438	55.000	42	1.438	FD	68.000	2	136	0	4.000	36,480	3,470,900
†16267001		75.394	58.500	6.110	5.750	5.750	73.307	-	2,450	70.500	48	1.313	61.366	48	1.313	FD	74.016	(10)	188	+.8	4.130	31,400	3,335,700
†16268001		89.181	71.400	7.090	6.650	6.730	96.566	-	3,360	83.622	60	1.299	74.016	60	1.299	FD	87.638	(14)	159	+.5	5.080	53,760	4,793,200
†16269001		94.742	72.250	9.125	8.375	8.750	92.500	-	5,560	89.750	60	1.625	75.250	68	1.625	SD	94.000	2	188	0	5.500	55,490	8,669,000
†16270001		102.992	84.134	7.205	6.654	6.654	99.331	-	3,970	95.906	64	1.299	87.205	68	1.535	FD	100.787	(20)	128	+.5	5.709	92,060	3,658,500
†16271001		124.800	98.375	11.250	9.375	10.750	124.800	-	10,500	117.625	72	1.875	103.625	72	1.875	FD	123.200	1.25	154	0	6.000	86,780	14,639,200
†16272001		143.800	114.000	11.062	10.250	10.437	143.800	-	14,980	136.625	72	2.156	121.375	72	2.156	SD	143.000	2	286	0	8.000	85,120	18,293,300
†16273001		180.000	150.000	10.625	10.000	10.000	175.250	-	22,100	170.000	80	1.875	156.250	80	1.875	FD	178.000	1	178	0	7.000	129,080	18,000,000
* No internal diameters for this type

Notes
Damage to equipment and danger to human life can result from failure to heed the recommendations in the text identified by the warning symbol in Kaydon Catalog 390 where further details and additional considerations can be found.

† Contact Kaydon for a 3D model.

Related downloads
Catalog 390: DT series (Adobe PDF)
Catalog 390: all pages (Adobe PDF)

Adobe Acrobat Reader


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