NINGBO PAPER GAMES KINGDOM CO.,LTD , https://www.papergameskingdom.com
Roller is assembled with shaft, shell, housing, in seal, bearing, labyrinth seal, cover, protective cover and snap ring.  
Seal StructureÂ
Roller adopts non-contact labyrinth structure,
forming a complex, winding and narrow maze between inner and outer seal part.
The maze is filled in high quality grease.
Outstanding performance of durable water proofing/dust proofing.
So rollers we produced can be rotated neatly with outstanding performance of water-proof and dust-proof.
Bearing
Brand:Â SKF/ NSK/HRB/LYC/ZWZ ETC.
Roller adopt C3 deep groove radial ball bearing which adopts bidirectional seal structure
to improve the performance of water-proof and dust-proofing.
Shell, Shaft and Housing
Parameters of the tube and shaft rollers adopted accord with GB standard requirmenets.
The tolerance as radial jump, roundness, straightness and appearance surpass the strict requirements in GB standard.
The housing is produced by the cold-rolled plate drawing,
adopting both sides precise welding between housing and shell to guarantee the rollers strong and rigid.
Size that we can do for roller
  No.
Standard Diameter
Length Range
(mm)Bearing Type
Min-MaxShell Thickness of Roller
Â
 mm
Inch
Â
Â
Â
1
63.5
2 1/2
150-3500
203 204
3.0mm-4.0mm
2
76
3
150-3500
204
3.0mm-4.5mm
3
89
3 1/3
150-3500
204 205
3.0mm-4.5mm
4
102
4
150-3500
204 205 206 305
3.2mm-4.5mm
5
108
4 1/4
150-3500
204 205 206 305 306
3.5mm-4.5mm
6
114
4 1/2
150-3500
204 205 206 305 306
3.5mm-4.5mm
7
127
5
150-3500
204 205 206 305 306
3.5mm-5.0mm
8
133
5 1/4
150-3500
204 205 206 207 305 306
3.5mm-5.0mm
9
140
5 1/2
150-3500
205 206 207 305 306 307
3.5mm-5.0mm
10
152
6
150-3500
205 206 207 305 306 307 308
4.0mm-5.0mm
11
159
6 1/4
150-3500
205 206 207 305 306 307 308
4.0mm-5.0mm
12
165
6 1/2
150-3500
206 207 305 306 307 308
4.5mm-6.0mm
13
177.8
7
150-3500
207 306 307 308 309
4.5mm-6.0mm
14
190.7
7 1/2
150-3500
207 306 307 308 309 310
4.5mm-7.0mm
15
194
7 5/8
150-3500
207 306 307 308 309 310
4.5mm-8.0mm
16
219
8 5/8
150-3500
308 309 310 312
4.5mm-8.0mm
Material List of Roller
Material List
No.
Name
Material
1
Shell
(Including Bearing Housing)Q235-A
(Carbon Steel)
2
Shaft
20#
(Carbon Steel)
3
Bearing
Finished Product
4
Bottom Seal
Nylon 6
5
Inner Seal
Nylon 1010
6
Outer Seal
Nylon 1010
7
Sealing Cover
08F
(Carbon Steel Galvanized)
8
Protective Cover
ABS Resin Craft
9
Snap Ring
Finished Product
Pictures Show
Packing Picture
Â
The Inner Structure of Roller
Roller is assembled with shaft, shell, housing, in seal, bearing, labyrinth seal, cover, protective cover and snap ring. Â
Seal StructureÂ
Roller adopts non-contact labyrinth structure,
forming a complex, winding and narrow maze between inner and outer seal part.
The maze is filled in high quality grease.
Outstanding performance of durable water proofing/dust proofing.
So rollers we produced can be rotated neatly with outstanding performance of water-proof and dust-proof.
Bearing
Brand:Â SKF/ NSK/HRB/LYC/ZWZ ETC.
Roller adopt C3 deep groove radial ball bearing which adopts bidirectional seal structure
to improve the performance of water-proof and dust-proofing.
Shell, Shaft and Housing
Parameters of the tube and shaft rollers adopted accord with GB standard requirmenets.
The tolerance as radial jump, roundness, straightness and appearance surpass the strict requirements in GB standard.
The housing is produced by the cold-rolled plate drawing,
adopting both sides precise welding between housing and shell to guarantee the rollers strong and rigid.
Size that we can do for roller
  No.
Standard Diameter
Length Range
(mm)Bearing Type
Min-MaxShell Thickness of Roller
Â
 mm
Inch
Â
Â
Â
1
63.5
2 1/2
150-3500
203 204
3.0mm-4.0mm
2
76
3
150-3500
204
3.0mm-4.5mm
3
89
3 1/3
150-3500
204 205
3.0mm-4.5mm
4
102
4
150-3500
204 205 206 305
3.2mm-4.5mm
5
108
4 1/4
150-3500
204 205 206 305 306
3.5mm-4.5mm
6
114
4 1/2
150-3500
204 205 206 305 306
3.5mm-4.5mm
7
127
5
150-3500
204 205 206 305 306
3.5mm-5.0mm
8
133
5 1/4
150-3500
204 205 206 207 305 306
3.5mm-5.0mm
9
140
5 1/2
150-3500
205 206 207 305 306 307
3.5mm-5.0mm
10
152
6
150-3500
205 206 207 305 306 307 308
4.0mm-5.0mm
11
159
6 1/4
150-3500
205 206 207 305 306 307 308
4.0mm-5.0mm
12
165
6 1/2
150-3500
206 207 305 306 307 308
4.5mm-6.0mm
13
177.8
7
150-3500
207 306 307 308 309
4.5mm-6.0mm
14
190.7
7 1/2
150-3500
207 306 307 308 309 310
4.5mm-7.0mm
15
194
7 5/8
150-3500
207 306 307 308 309 310
4.5mm-8.0mm
16
219
8 5/8
150-3500
308 309 310 312
4.5mm-8.0mm
Material List of Roller
Material List
No.
Name
Material
1
Shell
(Including Bearing Housing)Q235-A
(Carbon Steel)
2
Shaft
20#
(Carbon Steel)
3
Bearing
Finished Product
4
Bottom Seal
Nylon 6
5
Inner Seal
Nylon 1010
6
Outer Seal
Nylon 1010
7
Sealing Cover
08F
(Carbon Steel Galvanized)
8
Protective Cover
ABS Resin Craft
9
Snap Ring
Finished Product
Pictures Show
Packing Picture
Â
Model NO.: dia60-219mm
Seal: Labyrinth Seal
Feature: Water-Proof and Dust-Proofing
Life Time: 20, 000hours Under Normal Working Condition
Transport Package: Plywood Cases
Specification: 60-219
Origin: China
HS Code: 84313900
Model NO.: dia60-219mm
Seal: Labyrinth Seal
Feature: Water-Proof and Dust-Proofing
Life Time: 20, 000hours Under Normal Working Condition
Transport Package: Plywood Cases
Specification: 60-219
Origin: China
HS Code: 84313900
The Inner Structure of Roller