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1.Deep hardened wear surface, 2.Excellent performance, 3.Long durability, 4.Certification:ISO9001:2000, 5.Nice package - details see: https://www.machineto.com/kato-excavator-track-roller-hd250-excavator-spare-parts-for-heavy-equipment-10106808

1.We provide track roller/bottom roller/lower roller/supporting roller forexcavator and bulldozer.
Wheel body precision forged, normalizing and quenched to mack tread HRC50-58 hardness, depth of hardened layer reached to 5-8mm, to ensure that enduring impact resistance and surface wear resistance of the shell. High quality and standard floating sealing guarantees complete sealing of the track rollers and carrier orller, free of maintenance.

2. Advantage:
1). Material: We purchase raw material steel from several large steel groups, such as Hangzhou Iron and Steel Group Company, Shanghai Baoshan Iron and Steel Group Company, make sure our raw material's quality.
2). 20% of our technologist and workers have over 10 years experience in this industry.
3). We have complete production line and a professional designer and working team. We can also produce accroding to your blue print or samples.
4). Quality control: The quality control is strictly performed start from purchaseing raw materials to different machining procession till final packing. We have Magnetic Powder Detector, Material Testing Machine, Metallographic Microscope, such testing instruments, guanrantee our products a high quality.

Please contact us for more information about our products

3.Our track roller(bottom roller,lower roller) are mainly applicable for:

No.	Model	OEM Part No.	No.	Model	OEM Part No.
1	307/308	127-3806/6I-6524	62	EX220-1	9114618/9066509
2	311/312	151-9747/4I-7346	63	EX220-2	9089173
3	320/E200B	117-5045/8E-5034	64	EX220-3/5	9132602
4	205	8E-7494/5W4144/7T-6395	65	EX230-5	9132602
5	215B/225B	7T6394	66	EX270-1/2	9114682
6	322	163-4145/6I-9396	67	EX270-5	9168173
7	325	117-5046/6Y-1057	68	EX300-1	9114619/9066690
8	E300	854972/A065-00121	69	EX300-2/3/5	9168173/9114682
9	E300B	854973/A065-00122	70	EX330-5	9168173
10	219	8E-4573	71	EX400-1/2/3/5	4386648/9129347
11	227/229	8E-4576	72	EX550-5	4348373/9109493
12	235/235B/235C	8E-4579	73	EX750	9151869
13	330	117-5047/6Y-2795	74	EX1100-1/3	9114262/4300532
14	340	178-7293/123-1379	75	EX1800-1/3	9114725/4295201
15	350	189-0475	76	EX2500	9134231/4352440
16	E450	863096/G643-00200B	77	SK60-1	24100N6734F1
17	245	8E-0830	78	SK60-2	24100N6292F2
18	PC40-6	20T-30-00041	79	K904E	24100N2925F1
19	PC40-7	20T-30-00071	80	SK100-1/SK120-1	24100N4042F2
20	PC60-1/3	201-30-00050	81	K903	24100N2969F1
21	PC60-5/6	201-30-00062	82	K907B	B90N0059F6
22	PC60-7	201-30-00292	83	K907C/SK07N2	24100J6400F2
23	PC75UU-1	21W-30-00021	84	SK09-N2	24100J6186F1
24	PC100-1/2/3/5	203-30-00140	85	SK200-1	24100N5947F2
25	PC100-6/PC120-6	203-30-00220	86	SK220-1	24100J11696F3
26	PC120-1/2/3/5	203-30-00140	87	SK200-2/3	24100N5947F2
27	PC150-1/3	205-30-00172	88	SK200-5/6	YN64D00013F1
28	PC150-5	20Y-30-00012	89	SK300-1	24100N3856F3
29	PC180-3	205-30-00172	90	SK310-2/3	24100N7032F1
30	PC200-1/2	205-30-00172	91	SK330-6	LC64D00005F1
31	PC200-3	20Y-30-00130	92	SH100/SH120	KNA0242/KNA0532
32	PC200-5/6	20Y-30-00012	93	SH120-3	KNA0693
33	PC200-7	20Y-30-00015	94	SH200(outer)	KRA1189
34	PC220-1/2	205-30-00172	95	SH200(inner)	KRA1190
35	PC220-3	20Y-30-00130	96	SH220(outer)	KBA0869
36	PC220-5/6	20Y-30-00012	97	SH220(inner)	KBA0870
37	PC240-3/5	205-30-00172	98	SH220-2(outer)	KBA1047/KBA0432
38	PC300-1/2	141-30-00578	99	SH220-2(inner)	KBA1050/KBA0433
39	PC300-3	207-30-00130	100	LS-2800FJ/FJ2	KRA0781
40	PC300-5/6	207-30-00150	101	SH300	KSA0672
41	PC350-6	207-30-00150	102	SH300	KSA0671
42	PC400-3/5	208-30-00210	103	SH400	KTA0674
43	PC650-5	209-30-00191	104	SH400	KTA0673
44	PC650LC-6	21M-30-00100	105	HD250	767-50800100
45	PC1000-1	21N-30-00023	106	HD700	547-50800110
46	EX40-1/EX45-1	4405892/9106672	107	HD820	707-50800101
47	ZX50	4357785	108	HD1250	587-50800100
48	EX60-1	9046234/9066207	109	DH130	2270-1061
49	EX60-2	9066970	110	DH180	2270-1067
50	EX60-3	9096970	111	DH220	2270-1098
51	EX60-5	9153152/9177016	112	DH280/DH320	2270-9401A
52	EX80-5	9153152	113	R200	E181-2002
53	EX90-1	9066206	114	R210	81EL-20020
54	EX100	9066508	115	R290	81E9-2002
55	EX100-2/3/5	9132600/9092522	116	R290LC-7	81N8-11010
56	EX120-1	9066508	117	SE130LC	1081-01580
57	EX120-2/3/5	9132600/9092522	118	SE210-1	1081-00090
58	EX100M-1/EX150-1	9114616/9066691	119	SE210-2	1081-03680
59	EX200-1	9114617/9066510	120	SE280-2	1081-03871
60	EX200-2/3	9089173	121	EC210	1181-00020
61	EX200-5	9134243	122	EC290	1181-01011

4. about our products and company:

5.certificate