Precision Matched Taper Roller (302/303/322/323), Heavy Cylindrical (NJ/NUP) & Spherical Roller bearings engineered for industrial speed reducers, planetary gearheads, and extruder drives. Request evaluation samples with zero commitment.
Gear mesh misalignment of even 0.05 mm causes severe tooth edge concentration, pitting, and catastrophic gear tooth stripping. Here is how BMT Impex locks in gearbox precision.
Factory pre-set matched taper roller pairs (Face-to-Face DF and Back-to-Back DB) maintain exact preloaded end-play to keep gear mesh centerlines rigidly aligned under heavy forward/reverse torque.
Heavy cylindrical roller bearings (NJ / NUP series) with machined brass cages carry high radial overhang loads on input pinion shafts without raceway squashing.
Multi-stage tandem thrust cylindrical and spherical roller thrust bearings (29300/29400) support extreme continuous back-pressures in plastic and rubber extrusion lines.
Engineered C3 internal clearance and logarithmic roller crowning accommodate shaft thermal elongation without increasing internal frictional torque.
Special case-carburized clean bearing steel creates compressive surface stress, preventing micro-dents from gear wear particles from propagating into surface spalls.
We maintain pre-matched taper roller pair stock with locked spacer tolerance, ready for immediate dispatch across all industrial hubs in India.
Engineered for input pinions, intermediate countershafts, and heavy-torque output hollow/solid shafts.
Pre-adjusted single, double, and matched pairs for helical and bevel gearboxes. Transmits combined high radial and axial thrust loads with zero backlash drift.
High radial load rating for high-speed input shafts and intermediate reduction stages. NJ/NUP configurations provide axial location or free floating expansion.
Fitted to the low-speed, high-torque output shafts of heavy industrial reducers and planetary hubs. Handles high radial gear forces and external structural shaft misalignment.
Select a category tab below to view boundary dimensions, dynamic load ratings (Cr), and typical shaft positions.
| Bearing Model | Bore d (mm) | OD D (mm) | Width T (mm) | Dynamic Cr (kN) | Typical Gearbox Location | Action |
|---|---|---|---|---|---|---|
| 30208 | 40 | 80 | 19.75 | 63.8 | Input Pinion Shaft (Matched Pair) | |
| 30210 | 50 | 90 | 21.75 | 80.5 | Helical Reducer Intermediate Shaft | |
| 32212 | 60 | 110 | 29.75 | 145.0 | Bevel-Helical Pinion Shaft | |
| 32215 | 75 | 130 | 33.25 | 195.0 | Heavy Intermediate Gear Shaft | |
| 30312 | 60 | 130 | 33.5 | 175.0 | High-Thrust Worm Drive Gearbox | |
| 30316 | 80 | 170 | 42.5 | 285.0 | Planetary Sun Gear Pinion |
| Bearing Model | Bore d (mm) | OD D (mm) | Width B (mm) | Cage Type | Dynamic Cr (kN) | Typical Application | Action |
|---|---|---|---|---|---|---|---|
| NJ 212 ECM | 60 | 110 | 22 | Machined Brass | 112.0 | Helical Reducer Floating Shaft | |
| NUP 216 ECM | 80 | 140 | 26 | Machined Brass | 168.0 | Locating Intermediate Countershaft | |
| NJ 315 ECM | 75 | 160 | 37 | Machined Brass | 245.0 | High-Torque Bevel Gearbox Input | |
| NUP 318 ECM | 90 | 190 | 43 | Machined Brass | 340.0 | Heavy Extruder Drive Input |
| Bearing Model | Bore d (mm) | OD D (mm) | Width B (mm) | Dynamic Cr (kN) | Typical Gearbox Location | Action |
|---|---|---|---|---|---|---|
| 22216 CA/W33 | 80 | 140 | 33 | 230.0 | Output Shaft Reducer Support | |
| 22220 CA/W33 | 100 | 180 | 46 | 415.0 | Hollow Output Shaft Drive | |
| 22320 CA/W33 | 100 | 215 | 73 | 800.0 | Heavy Agitator Output Drive | |
| 24028 CA/W33 | 140 | 210 | 69 | 580.0 | Planetary Carrier Output Hub |
Every batch of gearbox bearings is verified at our in-house metallurgical and dimensional calibration laboratory to ensure exact preload consistency and zero assembly headaches.
Bench-tested standoff and axial clearance verification on DB/DF matched pairs to eliminate gearbox assembly shimming guesswork.
Digital Rockwell testing verifies case-hardened depth and raceway resistance to gear wear particle indentation.
Optical measurement of roller contact angle accuracy guarantees uniform two-directional thrust distribution.
100% dial calibration ensures radial runout within 3 µm for silent, low-noise gear transmission.
Commercial, technical, and dispatch clarifications for gear drive manufacturers and rebuilders.
Click "Request Free Testing Samples" or connect on WhatsApp (+91 8828206004). Provide your gearbox ratio, shaft diameters, and required bearing part numbers (e.g. 32212 matched DF pair, NJ 315 ECM). We will courier pre-adjusted evaluation samples with zero financial commitment.
Yes. We supply pre-matched Back-to-Back (DB), Face-to-Face (DF), and Tandem (DT) sets complete with factory-ground precision spacers, pre-calibrated to your required axial end-play or light preload specification.
Yes. All BMTV2 and WBT bearings feature high-purity bearing steels and machined brass/polyamide cages that are 100% chemically inert with mineral oils, PAO synthetics, polyglycols (PAG), and high-EP additive industrial gear lubricants.
Yes, 100% of our commercial consignments include 18% GST B2B tax invoices with e-way bills for full Input Tax Credit (ITC), accompanied by Mill Test Certificates (MTC 3.1) and Certificate of Conformance confirming metallurgical chemistry and hardness.
Standard taper and cylindrical gearbox sizes are stocked in central hubs and dispatched within 24 to 48 hours. Express transit reaches major machinery hubs (Pune, Ahmedabad, Coimbatore, Bengaluru, Hyderabad, Rajkot) in 2 to 3 business days.
Connect directly with our gearbox application engineering desk for volume OEM contract pricing, matched pair sizing, or zero-obligation trial samples.