News/Event

Bearings for Material Handling Systems (1)

2025-05-09

Summary

WD provides various types of track roller bearings, combined bearings and chain pulley bearings for material handling systems such as forklifts, stackers, port equipment, etc.

These types of bearings can support high dynamic and static loads as well as impact loads. They can withstand shock loads, frequent vibration, dampness, cold, heat as well as other harsh working conditions in routine applications.

With special treatment, some products can be used in corrosive environments for ocean equipment and high operating temperature conditions for ovens and furnaces.

Product Series

Combined bearings

Cam Followers

Yoke type track rollers

Track rollers

Mast rollers

Chain pulleys

Product Features

1. Compact structure and simple installation; Full Complement Cylindrical Roller Bearings can support extremely heavy loads.

2. Combined bearings can support high radial and axial loads at the same time.

3. High purity steel and case - hardened steel are used in the outer rings to withstand impact load.

4. A good sealing performance for reliable and longer bearing life.

5. High quality grease for maximum bearing life in each application.

6. WD combined bearings have an optimized external profile which can help reduce the wear and tear of bearings against the lifting mast and extend the service life of the rail profile.

7. WD combined bearings have three different specifications for each bearing size to reduce the clearance between bearings and rails, improve the guiding precision and reduce the noise.

Bearing Fit & Clearance

Fit

The outer ring of the track roller bearing is directly used as a rolling wheel.Therefore, there is no fit with bearing housing for track roller bearings.

The inner ring of the track roller bearing or chain pulley bearing fits with the shaft in a transition fit. We recommend that the shaft diameter tolerance for a light load is g6 and h6 for a normal load.

For the radial part and the bolt of combined bearings, we recommend a h6/g6 fit.

Bearing Attachment Methods

To attach the bearing, shaft rings or screws are normally used.

Clearances

C0 for normal applications

C2 for high precision applications

C3 for high temperature applications

Radial clearance of deep groove ball bearings

d(mm)		C2(μm)		C0(μm)		C3(μm)
From	To	min	max	min	max	min	max
10	18	0	9	3	18	11	25
18	24	0	10	5	20	13	28
24	30	1	11	5	20	13	28
30	40	1	11	6	20	15	33
40	50	1	11	6	23	18	36
50	65	1	15	8	28	23	43
65	80	1	15	10	30	25	51
80	100	1	18	12	36	30	58
100	120	2	20	15	41	36	66
120	140	2	23	18	48	41	81
140	160	2	23	18	53	46	91
160	180	2	25	20	61	53	102
180	200	2	30	25	71	63	117
200	225	2	35	25	85	75	140
225	250	2	40	30	95	85	160

Radial clearance of double row angular Contact Ball Bearings

d(mm)		C2(μm)		C0(μm)		C3(μm)
From	To	min	max	min	max	min	max
10	18	0	7	2	11	9	19
18	24	0	8	2	11	10	21
24	30	1	8	2	13	10	23
30	40	1	9	3	14	11	24
40	50	1	10	4	16	13	27
50	65	1	11	6	20	15	30
65	80	1	12	7	22	18	33
80	100	1	12	8	24	22	38
100	120	2	13	9	25	24	42
120	140	2	15	10	26	25	44
140	160	2	16	11	28	26	46
160	180	2	17	12	30	27	47
180	200	2	18	14	32	28	48

Radial clearance of cylindrical roller bearings

d(mm)		C2(μm)		C0(μm)		C3(μm)
From	To	min	max	min	max	min	max
10	30	0	25	20	45	35	60
30	40	5	30	25	50	45	70
40	50	5	35	25	50	50	80
50	65	10	40	40	70	60	90
65	80	10	45	40	75	65	100
80	100	15	50	50	85	75	110
100	120	15	55	50	90	85	125
120	140	15	60	60	105	100	145
140	160	20	70	70	120	115	165
160	180	25	75	75	125	120	170
180	200	35	90	90	145	140	195
200	225	45	105	105	165	160	220
225	250	45	110	110	175	170	235

Product Catalog

Standard combined bearings

Bearing Part Number	Dimensions												Load Rating							OD on Request	Reference Index
	d	D	C	H	H1	H2	D1	C1	d1	S	α	r	R	R1	V	C	Co	Ca	Coa	OD on Request	Germany	Italy A	Italy B
ZRS/ZZ/2PS/2RS	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	degree	mm	mm	mm	mm	KN	KN	KN	KN	mm	Germany	Italy A	Italy B
WD053/52.5 - 2RS	30	52.5	17	33	27	6	-	15	40	2	/	2	500	500	/	24	32	7	7		4.053
WD054/62.5 - 2RS	30	62.5	20	37.5	30.5	7	50	20	42	2.5	20	3	500	500	M6x1	31	35.5	11	11	62/64.8	4.054	4.0054 - 62.5	MR.001
WD055/70.1 - 2RS	35	70.1	23	43.6	38	8	57	22	48	2.5	20	4.5	500	500	M6x1	45.5	51	13	14	70.7/73.8	4.055	4.0055 - 70.1	MR.002
WD056/77.7 - 2RS	40	77.7	23	48	36.5	11.5	61	26	53	2	20	4.5	700	700	M6x1	48	56.8	18	18	78.1/81.8	4.056	4.0056 - 77.7	MR.003
WD057/77.7 - 2RS	40	77.7	23	40.7	29	18	61	26	53	2	20	4.5	700	700	M6x1	48	56.8	18	18	78.1/78.3	4.057	4.0057 - 77.7	MR.004
WD058/88.4 - 2RS	45	88.4	30	57	44	13	68	26	59	3.5	20	4	700	700	M6x1	68	72	23	23	88.9/92.8	4.058	4.0058 - 88.4	MR.005
WD059/101.2 - 2RS	50	101	28	46	33	13	82	30	67	3	20	4	1000	700	M6x1	73	82	25	27	101.8/102.3	4.059	4.0059 - 101.2	MR.006
WD060/107.7 - 2RS	55	108	31	53	39	14	83	34	71	4	20	5	1000	700	M6x1	81	95	31	36	111.8/127.8	4.060	4.0060 - 107.7	MR.007
WD061/107.7 - 2RS	60	108	31	69	55	14	83	34	71	4	20	5	1000	700	M6x1	81	95	31	36	107.5/111.8	4.061	4.0061 - 107.7	MR.008
WD062/123 - 2RS	60	123	37	72.3	56	16.3	92.5	40	80	5	20	5	1000	700	M6x1	110	132	43	50	127.8	4.062	4.0062 - 123	MR.009
WD063/149 - 2PS	60	149	45	77.5	58.5	19	121	50	103	5	15	5	1500	1500	M6x1	151	192	68	71	149.8/153.8	4.063	4.0063 - 149	MR.010
WD011/149 - 2RS	60	149	45	86	67	19	121	50	103	5.5	15	5	1500	1500	1/8GAS	151	192	68	71	149.8/153.8		4.0011 - 149	MR.191
WD037/174 - 2PS	80	174	55	95	71	24	132	63	120	7	20	7.5	1500	1000	1/8GAS	278	518	132	210			4.037 - 174
WD039/185 - 2PS	80	185	55	95	71	24	141	63	120	7	20	7.5	1500	1000	1/8GAS	278	518	132	210			4.039 - 185

Eccentric adjustable combined bearings

Bearing Part Number	d	T	D	H	h	B	A	Load Rating						OD on Request	Reference Index
	d	T	D	Min-Max	Min-Max			S	r	C	Co	Ca	Coa	OD on Request	Germany	Italy A
	mm	mm	mm	mm	mm	mm	mm	mm	mm	KN	KN	KN	KN	mm	Germany	Italy A
WD454	30	42	62.5	37.5-39	30.5-32	20	4-5.5	20	3	31	35.5	11	11	62/64.8	4.454	4.0454
WD455	35	54	70.1	44-45.5	36-37.5	23	4-5.5	20	4.5	45.5	51	11	11	73.8	4.455	4.0455
WD456	40	54	77.7	48-49.5	37-38.5	23	4-5.5	26	4.5	48	56.8	18	18	78.1/81.8	4.456	4.0456
WD457	40	54	77.7	40-41.5	29-30.5	23	3.5-5	26	4.5	48	56.8	18	18	78.1/81.8	4.457	4.0457
WD458	45	59	88.4	57-58.5	44-45.5	30	4-5.5	26	4	68	72	23	23	88.9/92.8	4.458	4.0458
WD459	50	69	101.6	46-48	33-35	26	4.5-6.5	30	4	73	82	25	27	101.2	4.459	4.0459
WD460	55	69	107.7	54-56	40-42	31	4-6	30	4	81	95	25	27	111.8	4.460	4.0460
WD461	60	69	107.7	69-71	55-57	31	4-6	30	5	81	95	25	27	111.8	4.461	4.0461
WD462	60	80	123	72.3-76.3	56-60	37	5-9	34	5	110	132	31	36	127.8	4.462	4.0462
WD463	60	108	149	77.7-81.5	58.5-62.5	45	6-10	34	5	151	192	31	36	149.4/153.8	4.463	4.0463

AdjustabIe combined bearings with shims

Bearing Part Number	Dimensions								Load Rating					OD on Request	Reference Index
	d	T	D	H	h	B	A	S	r	C	Co	Ca	Coa	OD on Request	Germany	Italy
	mm	mm	mm	mm	mm	mm	mm	mm	mm	KN	KN	KN	KN	mm	Germany	Italy
WD072-62	30	42	62	43	33	20	6	16	3	31	35.5	8	8	62.5/64.8	4.072	MR.146
WD073-70.1	35	48	70.1	48	40	23	6	16	4.5	45.5	51	8	8	70.7/73.8	4.073	MR.147
WD074-77.7	40	54	77.7	50.5	39.5	23	7	21	4.5	48	56.8	14	14	78. 1/78 .4/81.8	4.074	MR.148
WD075-77.7	40	54	77.7	45	34	23	7	21	4.5	48	56.8	14	14		4.075
WD076-88 .4	45	59	88.4	61	48	30	7	21	4	68	72	14	14	88.9/92.8	4.076	MR.150
WD077-101.2	50	67	101.2	50.5	37.5	28	7	21	4	73	82	18	19		4.077
WD078-107.7	55	71	107.7	58.5	44.5	31	8.5	33	5	81	95	31	36	111.8	4.078	MR.142
WD0784-107.7	60	71	107.7	69	55	31	8.5	33	5	81	95	31	36	111.8	4.0784
WD079-123	60	80	123	75.5	59.5	37	8.5	33	5	110	132	31	36	127.8	4.079	MR.153
WD080-149	60	103	149	88	69	45	15	50	5	151	192	68	71	153.8	4.080	MR.154

AdjustabIe combined bearings with pIastic axiaI roIIers

Bearing Part Number	Dimensions											Load Rating		Reference Index
	d	d1	D	C	H	h	D1	D2	r	S	V	C	Co	Reference Index
	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	KN	KN	Italy
WD0562	30	42	62	20	37.5	30.5	50	18	3	2.5	M10	31	35.5	MR.961
WD0563	35	48	70.1	23	44	36	57	18	4.5	2.5	M10	45.5	51	MR.962
WD0564	40	53	77.7	23	48	36.5	61	18	4	3	M10	48	56.8	MR.963
WD0565	45	59	88.9	30	57	44	68	30	4	3.5	M12	68	72	MR.964
WD0566	60	69	107.7	31	69	55	82	25	5	4	M16	81	95	MR.966
WD0567	60	80	123	37	72.3	56	92.5	40	5	5	M16	110	132	MR.967
WD0568	60	103	149	45	78.5	58.5	121	40	5	5.5	M16	151	192	MR.968
WD0569	60	103	149	45	86	67	121	40	5	5.5	M16	151	192

Precision radiaI bearings

Bearing Part Number	Dimensions								Load Rating		OD on Request	Reference Index
	C	B	D	L	F	H	E	α	C	Co	OD on Request	Germany	Italy
	mm	mm	mm	mm	mm	mm	mm	degree	KN	KN	mm	Germany	Italy
WD254	30	42	62.5	26.5	20	8	50	20	31	35.5	62/64.8	2.054	2.0363
WD255	35	48	70.1	34	23	8	57	20	45.5	51	73.8	2.055	2.0360
WD256	40	53	77.7	34	23	11.5	61	20	48	56.8	78. 1/81.8	2.056	9.2102
WD258	45	59	88.4	41	30	13	68	20	68	72	88.9/92.8	2.058	2.0448
WD261	60	71	107.7	51.5	31	14	83	20	81	95	111.8	2.061	2.1641/1
WD262	60	80	123	51.5	37	16.3	92.5	20	110	132	127.8	2.062	2.1642
WD263	60	103	149	54	45	19	121	15	151	192	153.8	2.063	2.1643

AdjustabIe heavy duty combined bearings

Bearing Part Number	Dimensions										Load Rating					Reference Index
	d	T	D	H	h	B	A	S	r	Type	C	Co	Ca	Coa		Italy A	Italy B
	mm	mm	mm	Min-Max	Min-Max	mm	mm	mm	mm	Type	KN	KN	KN	KN	Germany	Italy A	Italy B
WD089	80	113	165	69-72	53-56	40	5-8	50	3	T1	213	388	85	133	4.089	4.0089	MR.038A
WD090	100	124	190	84.5-87.5	64.5-67.5	48	6.5-9.5	60	4	T1	266	500	100	180	4.090	4.0090	MR.012A
WD091	110	146	220	94.5-97.5	74.5-77.5	58	6.5-9.5	75	5	T1	326	681	138	257	4.091	4.0091	MR.013A
WD092	120	168	250	102-105	77-80	60	7-10	75	5	T1	369	748	138	257	4.092	4.0092	MR.014A
WD093	150	188	280	119.5-123.5	89.5-93.5	72	7.5-11.5	90	5	T1	489	1066	182	488	4.093	4.0093	MR.015A
WD094	150	218	320	135-139	110-114	85	10-14	90	8	T1	542	1370	210	422	4.094	4.0094
WD069-170	70	98	170	109.7	84.7	51	11.2	49.7	4	T2	195	361	83	129	4.0069-170
WD087-185	80	115	185	100	75	47	15	49.7	3	T2	235	440	83	130	4.0087-185
WD019-220	110	150	220	115	90	60	13.5	70	5	T2	367	719	103	230	4.0019-220
WD038-260	130	184	260	120	95	60	18.5	80	5	T2	475	1000	167	279	4.0038-260
WD274-260	150	187	260	135	110	80	10	80	5	T2	566	1300	167	279	4.0274-260
WD088-300	140	190	300	140	110	80	10	86	8	T2	549	1272	195	335	4.0088-300
WD278-315	140	240	315	240	120	89	10	100	8	T2	785	1690	227	392	4.0278-315
WD084-340	140	240	340	150	120	89	10	100	8	T2	785	1690	227	392	4.0084-340
WD275-390	170	242	390	200	150	118	11	100	8	T2	1076	2535	227	392	4.0275-390

FIange PIates

Part Number	A	B	C	D	E	F	G	H	t	Type	Applicable Products	Reference Index
Part Number	mm	mm	mm	mm	mm	mm	mm	mm	mm	Type	Applicable Products	Germany	Italy
APS	90	50	30	40	70	8.5	M8	30	10	A	WD053	APS	8.0288
AP0	100	60	40	40	80	10.5	M10	30	10	A	WD054、WD072	AP0	8.0276
AP1	120	80	50	50	90	12.5	M12	35	15	A	WD055、WD073	AP1	8.0277
AP2	120	80	50	50	90	12.5	M12	40	15	A	WD056、WD074	AP2	8.0278
AP3	160	100	60	60	120	17	M16	45	20	A	WD058 、WD076	AP3
AP4	180	120	80	80	140	17	M16	60	20	A	WD061、WD078	AP4	8.0280
AP6	200	150	100	100	160	17	M16	60	20	A	WD063、WD080	AP6
AP89-Q	165	165	125	125	0	0	M20	80	23	B	WD089	AP89-Q
AP90-Q	190	190	150	150	0	0	M20	100	28	B	WD090	AP90-Q
AP91-Q	220	220	176	176	0	0	M24	110	33	B	WD091	AP91-Q
AP92-Q	250	250	206	206	0	0	M24	120	37	B	WD092	AP92-Q
AP93-Q	280	280	220	220	0	0	M30	150	37	B	WD093	AP93-Q
AP0-Q	60	60	40	40	0	0	M10	30	10	B	WD054、WD072	AP0-Q
AP1-Q	80	80	50	50	0	0	M12	35	15	B	WD055、WD073	AP1-Q
AP2-Q	80	80	50	50	0	0	M12	40	15	B	WD056、WD074	AP2-Q
AP2-Q	80	80	50	50	0	0	M12	40	15	B	WD056、WD074	AP2-Q
AP3-Q	120	120	90	90	0	0	M16	45	20	B	WD058 、WD076	AP3-Q
AP4-Q	120	120	80	80	0	0	M16	60	20	B	WD061、WD078	AP4-Q
AP6-Q	150	150	100	100	0	0	M16	60	20	B	WD063、WD080	AP6-Q