store 
Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
Availability:
4 in stock
Two-bolt pillow block with a self-lubricating carbon-graphite SLEEVE bearing for a 1-15/16 in shaft — a plain bearing with no balls, rollers, seals or locking collar. Rated for service to 700 °F where a greased bearing cannot survive.
List Price
$141.89
4 in stock
On the Shelf & Ready to Ship
On all orders
No Risk, No Hassle
| MFR / Brand | Link Belt |
|---|---|
| MPN | 3231PT3 |
| Model | 3231-PT3 |
| ID | 1-15/16 in |
| Material | Cast Iron |
|---|---|
| Type | Pillow Block Bearing |
| Base Number | 3231PT3 |
| Bore Shaft Size | 1-15/16 in |
| Housing Style | Two-bolt base pillow block - CORRECTED from 'flange mount'. The P in 3231PT3 denotes a pillow block; Flex-Block flange versions carry F or FX codes (3231FXT3). |
| Locking Method | None - no locking collar or setscrew. The shaft runs directly in the sleeve bore. |
| Replacement Insert | 3231T3 (the housing suffix is dropped for the insert-only number) |
| Mpn Variants | 3231PT3, 3231-PT3, 3231 PT3, 3231PT-3, 3231 P T3, LB 3231PT3, Link-Belt 3231PT3 |
| Manufacturer Status | Link-Belt mounted bearings are now part of Regal Rexnord; current equivalents cross to Rexnord numbers. |
| Compatible With Replaces | Direct replacement for Link-Belt 3231PT3. Obsolescence trail: Link-Belt to Regal Rexnord. NOT interchangeable in function with a rolling-element pillow block. |
| Bearing Type | PLAIN SLEEVE (bushing) bearing, mounted pillow block unit - NOT a ball or roller bearing |
| Lubricant | Self-lubricating carbon-graphite; no external lubricant |
| Part Number | 3231PT3 |
| Cross Reference 1 | Link-Belt 3231T3 – insert only, no housing |
|---|---|
| Cross Reference 2 | Link-Belt 3231PT1 – sintered bronze sleeve, 200 °F |
| Cross Reference 3 | Link-Belt 3231FXT3 – flange, not pillow block |
A Link-Belt Flex-Block 3200-series two-bolt pillow block fitted with a self-lubricating carbon-graphite sleeve bearing for a 1-15/16 in shaft. Cast iron housing, powder coated, with an alignable insert.
The P in 3231PT3 denotes a two-bolt base pillow block; Link-Belt’s Flex-Block flange versions carry F or FX codes, so the flange unit at this size is 3231FXT3. The T3 denotes a carbon-graphite sleeve, which makes this a plain bearing. There are no balls, no rollers, no cage, no seals and no locking collar in it.
3200: Link-Belt Flex-Block sleeve bearing series, alignable insert. 32: series. 31: size/shaft code, here 1-15/16 in. P: pillow block, two-bolt base, with F and FX as the flange codes. T3: carbon-graphite self-lubricating sleeve, rated to 700 °F. The alternative is T1, an oil-impregnated sintered bronze sleeve rated to 200 °F.
PT here has nothing to do with take-up units. Link-Belt take-ups use T, TU and T3Y prefixes. The ball-bearing pillow block family is P3U, an entirely different product.
Carbon-graphite is a solid, dry lubricant. It does not depend on grease or oil, so there is nothing in the bearing to cook off, carbonise, drain away or need replenishing.
A conventional greased ball bearing is finished well below 700 °F. Most lithium-complex greases are done by around 300 to 350 °F, above which the grease oxidises to a varnish, the bearing runs dry and it seizes. At 700 °F the T3 sleeve is still working. The applications follow directly: kiln and oven conveyor shafts, furnace and dryer fans, bakery ovens, foundry equipment, heat-treat lines, smoke and flue-gas dampers.
Because there is no grease, there is nothing to leak or to attract dust, and no relubrication schedule at all. That suits food and clean applications and positions that are difficult to reach.
A plain bearing has higher running friction than a rolling-element bearing, runs at lower speed, works against a hardened and ground shaft, and wears progressively rather than failing by fatigue. Sleeve bearings are sized on bearing pressure and on the PV (pressure times velocity) product rather than on an L10 fatigue life.
Bore / shaft size: 1-15/16 in. A, base to centreline: 2-1/4 in. B, bolt hole spacing: 6-3/16 in. C, overall length: 7-7/8 in. L: 4-1/2 in. F, bolt size: 5/8 in. Weight: approximately 7.2 lb. Housing: cast iron, powder coated, alignable insert. Replacement insert: 3231T3, with the housing suffix dropped.
The insert is alignable, so it accommodates a degree of initial misalignment between bearing seats. There is no locking collar or setscrew, and the shaft runs directly in the sleeve bore, so shaft surface finish and hardness govern sleeve life.
Cross-references: 3231PT3, 3231-PT3, 3231 PT3, 3231PT-3, LB 3231PT3. Insert only: 3231T3. Lower-temperature sleeve variant: 3231PT1 (sintered bronze, 200 °F). Flange version: 3231FXT3. Ball-bearing pillow block at similar size, a different product entirely: P3U231.
Obsolescence trail: Link-Belt mounted bearings are now part of Regal Rexnord, so current equivalents cross to Rexnord numbers.
$144.56
12 in stock
$61.17
64 in stock
$137.64
92 in stock
$141.11
255 in stock
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
When an HMI panel goes dark or a PLC module stops communicating, the machine it
If you have ever watched a machine glide smoothly back and forth, tracing a perfect
Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
Sort
Brand
Price
MPN
Categories
