Buy industrial‑grade Plummer Block Housings from Demy Bearings, a trusted bearing housing supplier. Our SN, SD, and SNL split housings feature high‑tensile HT250 grey iron and multi‑stage seal options (taconite/labyrinth) to withstand extreme radial loads and dust ingress in mining and conveyor systems.
Founded in 2004 by Mr. Dylan Min, Demy Bearings has grown from a specialized manufacturing enterprise into a global supplier with an annual capacity exceeding 100 million units. Driven by a culture of technical innovation and rigorous quality control, our 30,000 m² manufacturing base operates over 100 automated grinding and assembly lines under ISO 9001:2000 and IATF 16949:2016 quality systems.
Demy Bearings Pillow Block and Plummer Block Housings are available in various material grades—including high‑tensile grey cast iron (HT200/HT250), ductile iron, and cast steel—tailored to distinct load conditions and environmental requirements.
Split‑Housing Design: Cap and base separate easily to simplify inspection, assembly, and bearing replacement.
Flexible Lubrication Pathways: Outfitted with pre‑drilled grease nipples and oil‑drain channels for effective thermal control and smooth relubrication.
Heavy Load Support: SD 3000 and SD 500/600 series feature heavy‑ribbed bases to handle severe shock loads without housing deformation.
Enhanced Thermal Dissipation: Optimized base geometry transfers heat away from the outer ring, extending grease life and operational cycles.
Versatile Sealing Options: Compatible with double‑lip seals, labyrinth seals, felt seals, and heavy‑duty taconite seals for wet, dusty, or abrasive conditions.
Precision Bore Tolerances: Machined to strict ISO H8 bore tolerances to prevent outer‑ring rotation and ensure proper internal bearing clearance.
Select your model from our comprehensive standard production series below. Custom bore modifications, alternative tapping, and specific anti‑corrosion surface treatments are available upon request.
Designed for adapter sleeve mounting of self‑aligning ball bearings and spherical roller bearings.
|
Housing No. |
Shaft Dia d₁ (mm) |
D (H8) |
h (h12) |
a (mm) |
b (mm) |
c (mm) |
L (mm) |
Bolt Size |
Suitable Bearing |
Adapter Sleeve |
|
SN505 |
20 |
52 |
40 |
165 |
46 |
22 |
130 |
M12 |
1205K / 2205K |
H205 |
|
SN506 |
25 |
62 |
50 |
185 |
52 |
22 |
150 |
M12 |
1206K / 2206K |
H206 |
|
SN507 |
30 |
72 |
50 |
185 |
52 |
22 |
150 |
M12 |
1207K / 2207K |
H207 |
|
SN508 |
35 |
80 |
60 |
205 |
60 |
25 |
170 |
M12 |
1208K / 2208K |
H208 |
|
SN509 |
40 |
85 |
60 |
205 |
60 |
25 |
170 |
M12 |
1209K / 2209K |
H209 |
|
SN510 |
45 |
90 |
60 |
205 |
60 |
25 |
170 |
M12 |
1210K / 2210K |
H210 |
|
SN511 |
50 |
100 |
70 |
255 |
70 |
28 |
210 |
M16 |
1211K / 2211K |
H211 |
|
SN512 |
55 |
110 |
70 |
255 |
70 |
30 |
210 |
M16 |
1212K / 2212K |
H212 |
|
SN513 |
60 |
120 |
80 |
275 |
80 |
30 |
230 |
M16 |
1213K / 2213K |
H213 |
|
SN515 |
65 |
130 |
80 |
280 |
80 |
30 |
230 |
M16 |
1215K / 2215K |
H215 |
|
SN516 |
70 |
140 |
95 |
315 |
90 |
32 |
260 |
M20 |
1216K / 2216K |
H216 |
|
SN517 |
75 |
150 |
95 |
320 |
90 |
32 |
260 |
M20 |
1217K / 2217K |
H217 |
|
SN518 |
80 |
160 |
100 |
345 |
100 |
35 |
290 |
M20 |
1218K / 2218K |
H218 |
|
SN520 |
90 |
180 |
110 |
380 |
110 |
40 |
320 |
M24 |
22220K |
H320 |
|
SN522 |
100 |
200 |
120 |
410 |
120 |
45 |
350 |
M24 |
22222 |
H322 |
|
SN524 |
110 |
215 |
120 |
410 |
120 |
45 |
350 |
M24 |
22224 |
H3124 |
|
SN526 |
115 |
230 |
130 |
445 |
130 |
50 |
380 |
M24 |
22226 |
H3126 |
|
SN528 |
125 |
250 |
150 |
500 |
150 |
50 |
420 |
M30 |
22228 |
H3128 |
|
SN530 |
135 |
270 |
160 |
530 |
160 |
60 |
450 |
M30 |
22230 |
H3130 |
|
SN532 |
140 |
290 |
160 |
550 |
160 |
60 |
470 |
M30 |
22232 |
H3132 |
High‑rigidity modular housings featuring optimized mechanical reinforcement and superior sealing capabilities.
|
Housing No. |
Shaft Dia d₁ (mm) |
h (mm) |
a (mm) |
e (mm) |
b (mm) |
L (mm) |
Bolt Size |
Matching Bearings |
|
SNL 205 / 505 |
20 / 25 |
40 |
165 |
130 |
46 |
197 |
M10 |
1205 / 2205 / 22205K |
|
SNL 206 / 506 |
25 / 30 |
50 |
185 |
150 |
52 |
228 |
M12 |
1206 / 2206 / 22206K |
|
SNL 207 / 507 |
30 / 35 |
50 |
185 |
150 |
52 |
229 |
M12 |
1207 / 2207 / 22207K |
|
SNL 208 / 508 |
35 / 40 |
60 |
205 |
170 |
60 |
251 |
M12 |
1208 / 2208 / 22208K |
|
SNL 209 / 509 |
40 / 45 |
60 |
205 |
170 |
60 |
251 |
M12 |
1209 / 2209 / 22209K |
|
SNL 210 / 510 |
45 / 50 |
60 |
205 |
170 |
60 |
251 |
M12 |
1210 / 2210 / 22210K |
|
SNL 211 / 511 |
50 / 55 |
70 |
255 |
210 |
70 |
281 |
M16 |
1211 / 2211 / 22211K |
|
SNL 212 / 512 |
55 / 60 |
70 |
255 |
210 |
70 |
281 |
M16 |
1212 / 2212 / 22212K |
|
SNL 213 / 513 |
60 / 65 |
80 |
275 |
230 |
80 |
315 |
M16 |
1213 / 2213 / 22213K |
|
SNL 215 / 515 |
65 / 75 |
80 |
280 |
230 |
80 |
315 |
M16 |
1215 / 2215 / 22215K |
|
SNL 216 / 516 |
70 / 80 |
95 |
315 |
260 |
90 |
345 |
M20 |
1216 / 2216 / 22216K |
|
SNL 217 / 517 |
75 / 85 |
95 |
320 |
260 |
90 |
345 |
M20 |
1217 / 2217 / 22217K |
|
SNL 218 / 518 |
80 / 90 |
100 |
345 |
290 |
100 |
380 |
M20 |
1218 / 2218 / 22218K |
Built for heavy mechanical systems including mining conveyors, steel rolling mills, large industrial pumps, and power generation equipment.
|
Model Series |
Shaft Dia Range (mm) |
Main Application Profile |
|
SD 3034‑SD 3060 |
150mm – 280mm |
Heavy bulk material handling, primary crushers, kiln drives |
|
SNL 3036‑SNL 3080 |
160mm – 380mm |
Large‑scale ventilation fans, paper machinery, heavy processing |
|
SNL 3134‑SNL 3164 |
150mm – 300mm |
Severe shock‑load drive assemblies, industrial gearboxes |
|
S3024K‑S3056K |
110mm – 260mm |
High‑capacity agricultural equipment, industrial mixers |
Demy Bearings Pillow Block Housings deliver dependable mechanical support across key global industries:
Material Handling & Mining Conveyors: High housing stiffness absorbs continuous impact loads, while multi‑stage seals prevent abrasive dust ingress.
Industrial Pumps & Centrifugal Systems: Precision‑machined seats reduce vibration, ensuring long mechanical seal life and smooth fluid transfer.
Agricultural Machinery: Corrosion‑resistant surface coatings and durable cast iron bodies withstand humidity, chemical fertilizers, and harsh soil contact.
Heavy Electric Motors & Power Transmission: Maintains precise shaft alignment to eliminate stray vibration and minimize energy losses across drive lines.
To guarantee consistent accuracy and performance, Demy Bearings enforces strict quality gates at every stage of production:
All raw castings are verified for tensile strength, grain structure, and impact resistance.
Bearing seats are machined on multi‑axis CNC centers to satisfy tight dimensional and geometric tolerances.
Integrated online measurement systems verify alignment, bolt‑hole positioning, and bore roundness prior to coating and shipment.
A: Our standard housings are cast from high‑tensile grey iron (HT200/HT250). For severe operating environments requiring extra impact strength, we also supply ductile iron (QT450‑10), cast steel, and stainless steel housing solutions.
A: For general dust and moisture, double‑lip nitrile rubber seals (TSN...G) are recommended. For highly abrasive or mining environments, we recommend multi‑stage labyrinth seals (TSN...S) or heavy‑duty taconite seals (TSN...ND) to preserve lubricant purity.
A: Yes. We offer comprehensive OEM/ODM services, including customized bore dimensions, special paint finishes, custom laser marking on housing bodies, and private‑label packaging for distributors.
A: All housing bore seats are precision‑machined to ISO H8 tolerances using CNC centers. This strict precision prevents outer‑ring rotation, maintains calculated radial clearances, and promotes smooth heat transfer away from the bearing.
A: Our manufacturing facilities operate under ISO 9001:2000 and IATF 16949:2016 quality management systems. Standard series models are maintained in stock for fast dispatch, while custom volume orders typically carry a 20–30 day lead time.
Address
No.183,Longfeng,West of Zhangting industrial Zone,Yuyao,Ningbo,China
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